Create and implement the new upload widget, Create and implement the create link widget, Create and implement the create group widget

Create and implement the new upload widget:

- Drag and drop or browse for files
- Inline edit of file names
- Remove files from the queue
- Change permissions for the queue
- Share with other users and groups
- Introduced a 'get context' event that fetches the context of the page before rendering and prepopulating the autosuggest
- Progress indication for file uploads
- Drag and drop files on assigned `oae-dnd-upload` areas. This opens the upload widget and renders a list of dropped files
- Added abort upload functionality that is invoked when the upload modal is closed
- Added the new OAE favicon.ico

Create and implement the create link widget:
- All of the above but for links

Create and implement the create group widget:
- Input for title and visibility of group
- Validation to check if group exists already
- Added a secondary view to the setpermissions widget