apply the default calendar reminders where appropriate

app/src/main/kotlin/com/simplemobiletools/calendar/activities/SettingsActivity.kt

@@ -392,7 +392,7 @@ class SettingsActivity : SimpleActivity() {
                 reminderMinutes.add(it.minutes)
             }
         }
-        config.googleDefaultReminders = reminderMinutes.joinToString()
+        config.googleDefaultReminders = reminderMinutes.joinToString(",")
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {

app/src/main/kotlin/com/simplemobiletools/calendar/asynctasks/FetchGoogleEventsTask.kt

@@ -216,6 +216,11 @@ class FetchGoogleEventsTask(val context: Context, val googleSyncListener: Google
                     reminderMinutes.add(minutes)
                 }
             }
+        } else if (json?.has(USE_DEFAULT) == true) {
+            val minutes = context.config.googleDefaultReminders.splitToSequence(',')
+            minutes.forEach {
+                reminderMinutes.add(it.toInt())
+            }
         }
         return reminderMinutes
     }

app/src/main/kotlin/com/simplemobiletools/calendar/helpers/Constants.kt

@@ -131,3 +131,4 @@ val OPERATION_UPDATE = 2
 val OPERATION_DELETE = 3
 val OVERRIDES = "overrides"
 val DEFAULT_REMINDERS = "defaultReminders"
+val USE_DEFAULT = "useDefault"