Move 'Publish/Rebase/Delete Edit' buttons into header

If a change has a change edit the natural next step is to
publish/rebase (or delete) it, hence these buttons should be displayed
in a more prominent place.

Change-Id: If02482ad8e5b564b4fbf1ce4a01fe7afd6e12ea2
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
4 files changed