sync

Instead of just checking if a file in the folder that is refactored is
out of sync, we refresh the given resource to avoid the dialog that the
resource is out of sync that doesn't provide any action for the user.

Change-Id: I0928613154c847025b970f4f52af13267615aa9f
Signed-off-by: Jonas Hungershausen <jonas.hungershausen@vogella.com>