Include etags for the root of the shared folder
Include etag field for folder contents
Fix WebDAV uploading of partial shared files
Return unknown free space for shared root folder so we can still upload partial files
Fix variable
Correct parent folders' ETags for all users with access to a shared file
Fix target path and reuse mtime
Merge branch 'master' into shared-folder-etags

Conflicts:
	apps/files_sharing/lib/sharedstorage.php
Update ETag when file is shared
Fix variable name in Shared_Updater
Fix group post_shared hook
Merge branch 'master' into shared-folder-etags

Conflicts:
	apps/files_sharing/appinfo/app.php
Move hook connectors from shared storage to app.php, add post_unshare hook
Update Shared folders ETags of users with reshares
itemSource parameter should be fileSource
Merge branch 'master' into shared-folder-etags

Conflicts:
	apps/files_sharing/lib/sharedstorage.php
use pre_unshare hook, otherwise the share is already removed. Which means that we have no chance to determine which folder has to be updated
Fix share hook for updater
not only files can be reshared but also folders
Fix correctFolders and retrieve the correct storage cache