Notification improvements:
- use NotificationCompat.Builder from the support library and remove the custom progressbar layout; this will give platform users the expected look and feel of a notificati
- remove OCNotificationManager (it contained the old layout references, but was unused)
- add new notification icons that follow the Android style guidelines (http://developer.android.com/design/style/iconography.html#notification)
Merge branch 'pr/400' into improve_notifications_pr_400_with_develop
Grant that notifications of finished downloads can be removed from notification are without clicking on
Progress bar in notifications is hidden when download/upload finishes
OC-3314: Modify CreateShareOperation#run in the application so that it uses GetRemoteSharesForFileOperation() to get a remote link in the server (if exists) and use it without creating a new one
Merge branch 'develop' into share_link__reuse_link_shared_in_server
Merge branch 'develop' into share_link__reuse_link_shared_in_server
Update library reference: fix bug in expiration date for Share
Update library reference: change in ShareXMLParser, parse expiration date with WebdavUtils.parseResponseDate
Updated Android support library, mainly to fix crash in Android 3.x devices due to new API for notifications
Grant that progress bar in notifications is shown in Android 2.x and 3.x devices
Fixed contrast of text in notifications for Android 2.x and 3.x
Changes from  comments in PR#442, in oc-project
Revert "Changes from  comments in PR#442, in oc-project"

This reverts commit 0aa9a0bc6cca948ac5a0d693cf9791fad2d99d6f.
Added notification icons with dark background to fix contrast in Android 2.x and 3.x
Changes from  comments in PR#442, in oc-project
Update reference to owncloud-library
Merge pull request #442 from owncloud/share_link__reuse_link_shared_in_server

Reuse public link already existing in server when user tries to reshare a file.
Merge pull request #400 from tommyd3mdi/develop

Notification improvements
Merge branch 'develop' into improve_notifications_pr_400_with_develop