diff --git a/apps/accessibility/webpack.js b/apps/accessibility/webpack.js
index 8d4695ed7d..ddcb85d344 100644
--- a/apps/accessibility/webpack.js
+++ b/apps/accessibility/webpack.js
@@ -1,5 +1,4 @@
-const path = require('path');
-const { VueLoaderPlugin } = require('vue-loader');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'main.js'),
@@ -7,22 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, './js'),
 		publicPath: '/js/',
 		filename: 'accessibility.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.vue$/,
-				loader: 'vue-loader'
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			}
-		]
-	},
-	plugins: [new VueLoaderPlugin()],
-	resolve: {
-		extensions: ['*', '.js', '.vue', '.json']
 	}
-};
+}
diff --git a/apps/comments/webpack.js b/apps/comments/webpack.js
index dff1aa0518..b2413d148a 100644
--- a/apps/comments/webpack.js
+++ b/apps/comments/webpack.js
@@ -1,4 +1,4 @@
-const path = require('path');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'comments.js'),
@@ -7,34 +7,7 @@ module.exports = {
 		publicPath: '/js/',
 		filename: 'comments.js'
 	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			}
-		]
-	},
 	externals: {
 		jquery: 'jQuery'
-	},
-	resolve: {
-		extensions: ['*', '.js']
 	}
-};
+}
diff --git a/apps/files_sharing/webpack.js b/apps/files_sharing/webpack.js
index f016341f5a..8ff9afd866 100644
--- a/apps/files_sharing/webpack.js
+++ b/apps/files_sharing/webpack.js
@@ -1,5 +1,4 @@
 const path = require('path');
-const { VueLoaderPlugin } = require('vue-loader');
 
 module.exports = {
 	entry: {
@@ -12,31 +11,5 @@ module.exports = {
 		publicPath: '/js/',
 		filename: '[name].js',
 		chunkFilename: 'files_sharing.[id].js'
-
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['vue-style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['vue-style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.vue$/,
-				loader: 'vue-loader'
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			}
-		]
-	},
-	plugins: [new VueLoaderPlugin()],
-	resolve: {
-		extensions: ['*', '.js', '.vue', '.json']
-	},
-};
+	}
+}
diff --git a/apps/files_trashbin/webpack.js b/apps/files_trashbin/webpack.js
index 2261fb08d3..fbf378933b 100644
--- a/apps/files_trashbin/webpack.js
+++ b/apps/files_trashbin/webpack.js
@@ -1,4 +1,4 @@
-const path = require('path');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'files_trashbin.js'),
@@ -6,32 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, './js'),
 		publicPath: '/js/',
 		filename: 'files_trashbin.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			}
-		]
-	},
-	resolve: {
-		extensions: ['*', '.js']
 	}
-};
+}
diff --git a/apps/files_versions/webpack.js b/apps/files_versions/webpack.js
index 12024a39b5..d8e9f41335 100644
--- a/apps/files_versions/webpack.js
+++ b/apps/files_versions/webpack.js
@@ -1,4 +1,4 @@
-const path = require('path');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'files_versions.js'),
@@ -6,36 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, 'js'),
 		publicPath: '/js/',
 		filename: 'files_versions.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			},
-			{
-				test: /\.handlebars$/,
-				loader: "handlebars-loader"
-			}
-		]
-	},
-	resolve: {
-		extensions: ['*', '.js']
 	}
-};
+}
diff --git a/apps/oauth2/webpack.js b/apps/oauth2/webpack.js
index 1242695240..dfaf0324ee 100644
--- a/apps/oauth2/webpack.js
+++ b/apps/oauth2/webpack.js
@@ -1,32 +1,10 @@
 const path = require('path')
-const { VueLoaderPlugin } = require('vue-loader');
 
 module.exports = {
-  entry: path.join(__dirname, 'src', 'main.js'),
-  output: {
-    path: path.resolve(__dirname, './js'),
-    publicPath: '/js',
-    filename: 'oauth2.js'
-  },
-  module: {
-    rules: [
-      {
-        test: /\.vue$/,
-        loader: 'vue-loader'
-      },
-      {
-        test: /\.css$/,
-        use: ['vue-style-loader', 'css-loader']
-      },
-    ]
-  },
-  plugins: [
-    new VueLoaderPlugin()
-  ],
-  resolve: {
-    alias: {
-      'vue$': 'vue/dist/vue.esm.js'
-    },
-    extensions: ['*', '.js', '.vue', '.json']
-  }
+	entry: path.join(__dirname, 'src', 'main.js'),
+	output: {
+		path: path.resolve(__dirname, './js'),
+		publicPath: '/js',
+		filename: 'oauth2.js'
+	}
 }
diff --git a/apps/systemtags/webpack.js b/apps/systemtags/webpack.js
index 27f1b90325..b4da502699 100644
--- a/apps/systemtags/webpack.js
+++ b/apps/systemtags/webpack.js
@@ -1,4 +1,4 @@
-const path = require('path');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'systemtags.js'),
@@ -6,32 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, './js'),
 		publicPath: '/js/',
 		filename: 'systemtags.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			}
-		]
-	},
-	resolve: {
-		extensions: ['*', '.js']
 	}
-};
+}
diff --git a/apps/twofactor_backupcodes/webpack.js b/apps/twofactor_backupcodes/webpack.js
index bd25bf2bbd..ab0888f67c 100644
--- a/apps/twofactor_backupcodes/webpack.js
+++ b/apps/twofactor_backupcodes/webpack.js
@@ -1,5 +1,4 @@
-const path = require('path');
-const { VueLoaderPlugin } = require('vue-loader');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'settings.js'),
@@ -7,40 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, 'js'),
 		publicPath: '/js',
 		filename: 'settings.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: ['vue-style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['vue-style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.vue$/,
-				loader: 'vue-loader'
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			}
-		]
-	},
-	plugins: [new VueLoaderPlugin()],
-	resolve: {
-		alias: {
-			vue$: 'vue/dist/vue.esm.js',
-		},
-		extensions: ['*', '.js', '.vue', '.json']
 	}
-};
+}
diff --git a/apps/updatenotification/js/updatenotification.js b/apps/updatenotification/js/updatenotification.js
index 62571b1b47..c155ea46f8 100644
Binary files a/apps/updatenotification/js/updatenotification.js and b/apps/updatenotification/js/updatenotification.js differ
diff --git a/apps/updatenotification/js/updatenotification.js.map b/apps/updatenotification/js/updatenotification.js.map
index f38ee9a9b6..ee71ff5dd9 100644
Binary files a/apps/updatenotification/js/updatenotification.js.map and b/apps/updatenotification/js/updatenotification.js.map differ
diff --git a/apps/updatenotification/src/components/root.vue b/apps/updatenotification/src/components/root.vue
index 8375336939..60b631922e 100644
--- a/apps/updatenotification/src/components/root.vue
+++ b/apps/updatenotification/src/components/root.vue
@@ -409,7 +409,7 @@
 	}
 </script>
 
-<style lang="sass" scoped>
+<style lang="scss" scoped>
 	#updatenotification {
 		margin-top: -25px;
 		margin-bottom: 200px;
@@ -482,7 +482,7 @@
 		}
 	}
 </style>
-<style lang="sass">
+<style lang="scss">
 	/* override needed to make menu wider */
 	#updatenotification .popovermenu {
 		p {
diff --git a/apps/updatenotification/webpack.js b/apps/updatenotification/webpack.js
index cdaad96f4b..a13e823e16 100644
--- a/apps/updatenotification/webpack.js
+++ b/apps/updatenotification/webpack.js
@@ -1,5 +1,4 @@
-const path = require('path');
-const { VueLoaderPlugin } = require('vue-loader');
+const path = require('path')
 
 module.exports = {
 	entry: path.join(__dirname, 'src', 'init.js'),
@@ -7,26 +6,5 @@ module.exports = {
 		path: path.resolve(__dirname, './js'),
 		publicPath: '/js/',
 		filename: 'updatenotification.js'
-	},
-	module: {
-		rules: [
-			{
-				test: /\.vue$/,
-				loader: 'vue-loader'
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.s[a|c]ss$/,
-				loader: 'style-loader!css-loader!sass-loader'
-			}
-		]
-	},
-	plugins: [new VueLoaderPlugin()],
-	resolve: {
-		extensions: ['*', '.js', '.vue', '.json']
 	}
-};
+}
diff --git a/apps/workflowengine/webpack.js b/apps/workflowengine/webpack.js
index 7cf6024573..1d7ec1595a 100644
--- a/apps/workflowengine/webpack.js
+++ b/apps/workflowengine/webpack.js
@@ -9,36 +9,13 @@ module.exports = {
 	},
 	module: {
 		rules: [
-			{
-				test: /\.css$/,
-				use: ['style-loader', 'css-loader']
-			},
-			{
-				test: /\.scss$/,
-				use: ['style-loader', 'css-loader', 'sass-loader']
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-			{
-				test: /\.(png|jpg|gif|svg)$/,
-				loader: 'file-loader',
-				options: {
-					name: '[name].[ext]?[hash]'
-				}
-			},
 			{
 				test: /\.handlebars$/,
 				loader: "handlebars-loader",
 				options: {
 					helperDirs: path.join(__dirname, 'src/hbs_helpers'),
 				}
-			},
+			}
 		]
-	},
-	resolve: {
-		extensions: ['*', '.js', '.handlebars']
 	}
-};
+}
diff --git a/core/webpack.js b/core/webpack.js
index 92b471c20b..1cbd381aa4 100644
--- a/core/webpack.js
+++ b/core/webpack.js
@@ -1,6 +1,5 @@
-const path = require('path');
-const webpack = require('webpack');
-const { VueLoaderPlugin } = require('vue-loader');
+const path = require('path')
+const webpack = require('webpack')
 
 module.exports = [
 	{
@@ -15,41 +14,9 @@ module.exports = [
 		},
 		module: {
 			rules: [
-				{
-					test: /\.css$/,
-					use: ['vue-style-loader', 'style-loader', 'css-loader']
-				},
-				{
-					test: /\.scss$/,
-					use: ['vue-style-loader', 'style-loader', 'css-loader', 'sass-loader']
-				},
 				{
 					test: /davclient/,
 					use: 'exports-loader?dav'
-				},
-				{
-					test: /\.js$/,
-					loader: 'babel-loader',
-					exclude: /node_modules/
-				},
-				{
-					test: /\.vue$/,
-					loader: 'vue-loader'
-				},
-				{
-					test: /\.(png|jpg|gif)$/,
-					loader: 'url-loader',
-					options: {
-						name: '[name].[ext]?[hash]',
-						limit: 8192
-					}
-				},
-				{
-					test: /\.handlebars/,
-					loader: "handlebars-loader",
-					query: {
-						extensions: '.handlebars'
-					}
 				}
 			]
 		},
@@ -58,16 +25,8 @@ module.exports = [
 				'_': "underscore",
 				$: "jquery",
 				jQuery: "jquery"
-			}),
-			new VueLoaderPlugin(),
-		],
-		resolve: {
-			alias: {
-				handlebars: 'handlebars/runtime'
-			},
-			extensions: ['*', '.js'],
-			symlinks: false
-		}
+			})
+		]
 	},
 	{
 		entry: {
@@ -77,23 +36,6 @@ module.exports = [
 		output: {
 			filename: '[name].js',
 			path: path.resolve(__dirname, 'js/dist')
-		},
-		module: {
-			rules: [
-				{
-					test: /\.js$/,
-					loader: 'babel-loader',
-					exclude: /node_modules/
-				},
-				{
-					test: /\.css$/,
-					use: ['style-loader', 'css-loader']
-				},
-				{
-					test: /\.scss$/,
-					use: ['style-loader', 'css-loader', 'sass-loader']
-				},
-			]
 		}
 	}
-];
+]
diff --git a/settings/webpack.js b/settings/webpack.js
index fc91ab5f9f..e872bb7d19 100644
--- a/settings/webpack.js
+++ b/settings/webpack.js
@@ -1,5 +1,4 @@
 const path = require('path')
-const { VueLoaderPlugin } = require('vue-loader');
 
 module.exports = {
 	entry: {
@@ -16,36 +15,5 @@ module.exports = {
 		splitChunks: {
 			automaticNameDelimiter: '-',
 		}
-	},
-	module: {
-		rules: [
-			{
-				test: /\.css$/,
-				use: [
-					'vue-style-loader', 'css-loader'
-				],
-			},
-			{
-				test: /\.scss$/,
-				use: [
-					'vue-style-loader', 'css-loader', 'sass-loader'
-				],
-			},
-			{
-				test: /\.vue$/,
-				loader: 'vue-loader'
-			},
-			{
-				test: /\.js$/,
-				loader: 'babel-loader',
-				exclude: /node_modules/
-			},
-		]
-	},
-	plugins: [
-		new VueLoaderPlugin()
-	],
-	resolve: {
-		extensions: ['*', '.js', '.vue', '.json']
 	}
 }
diff --git a/webpack.common.js b/webpack.common.js
index 94398ebc4b..1fa889b987 100644
--- a/webpack.common.js
+++ b/webpack.common.js
@@ -1,28 +1,85 @@
-const core = require('./core/webpack')
-const settings = require('./settings/webpack')
+const path = require('path');
+const merge = require('webpack-merge');
+const { VueLoaderPlugin } = require('vue-loader');
 
-const accessibility = require('./apps/accessibility/webpack')
-const comments = require('./apps/comments/webpack')
-const files_sharing = require('./apps/files_sharing/webpack')
-const files_trashbin = require('./apps/files_trashbin/webpack')
-const files_versions = require('./apps/files_versions/webpack')
-const oauth2 = require('./apps/oauth2/webpack')
-const systemtags = require('./apps/systemtags/webpack')
-const twofactor_backupscodes = require('./apps/twofactor_backupcodes/webpack')
-const updatenotifications = require('./apps/updatenotification/webpack')
-const workflowengine = require('./apps/workflowengine/webpack')
+const core = require('./core/webpack');
+const settings = require('./settings/webpack');
 
-module.exports = [].concat(
-	core,
-	settings,
-	accessibility,
-	comments,
-	files_sharing,
-	files_trashbin,
-	files_versions,
-	oauth2,
-	systemtags,
-	twofactor_backupscodes,
-	updatenotifications,
-	workflowengine
-);
+const accessibility = require('./apps/accessibility/webpack');
+const comments = require('./apps/comments/webpack');
+const files_sharing = require('./apps/files_sharing/webpack');
+const files_trashbin = require('./apps/files_trashbin/webpack');
+const files_versions = require('./apps/files_versions/webpack');
+const oauth2 = require('./apps/oauth2/webpack');
+const systemtags = require('./apps/systemtags/webpack');
+const twofactor_backupscodes = require('./apps/twofactor_backupcodes/webpack');
+const updatenotifications = require('./apps/updatenotification/webpack');
+const workflowengine = require('./apps/workflowengine/webpack');
+
+module.exports = []
+	.concat(
+		core,
+		settings,
+		accessibility,
+		comments,
+		files_sharing,
+		files_trashbin,
+		files_versions,
+		oauth2,
+		systemtags,
+		twofactor_backupscodes,
+		updatenotifications,
+		workflowengine
+	)
+	.map(config =>
+		merge(config, {
+			module: {
+				rules: [
+					{
+						test: /\.css$/,
+						use: ['style-loader', 'css-loader']
+					},
+					{
+						test: /\.scss$/,
+						use: ['style-loader', 'css-loader', 'sass-loader']
+					},
+					{
+						test: /\.js$/,
+						loader: 'babel-loader',
+						exclude: /node_modules/
+					},
+					{
+						test: /\.vue$/,
+						loader: 'vue-loader'
+					},
+					{
+						test: /\.(png|jpg|gif)$/,
+						loader: 'url-loader',
+						options: {
+							name: '[name].[ext]?[hash]',
+							limit: 8192
+						}
+					},
+					{
+						test: /\.handlebars/,
+						loader: "handlebars-loader",
+						query: {
+							extensions: '.handlebars'
+						}
+					}
+				]
+			},
+			plugins: [
+				new VueLoaderPlugin()
+			],
+			resolve: {
+				alias: {
+					OC: path.resolve(__dirname, './core/src/OC'),
+					OCA: path.resolve(__dirname, './core/src/OCA'),
+					// make sure to use the handlebar runtime when importing
+					handlebars: 'handlebars/runtime'
+				},
+				extensions: ['*', '.js', '.vue', '.json']
+			}
+		})
+	);