The text editor app will register this instead.
Also made "fileList" a non-private attribute to make it possible for
plugins to access the attached file list object.
Owncloud apps can now add new items to the “new” file menu. A new
`addMenuEntry()` was added to `NewFileMenu`. To add a new item, you
have to attach a plugin to `OCA.Files.NewFileMenu` that will call
`addMenuEntry()`.
Added hack that uses a "filter" CSS with explicit URL to fix the "New"
menu by scaling down icons and also fix the folder/filetype icon in the sidebar
by scaling it up.
- added unit tests for NewFileMenu
- use generateUrl for FileList.createFile and FileList.createDirectory
- added unit tests for FileList.createFile and FileList.createDirectory
