Show/hide the delete button when branches change

When updating the branches table, it could be that the delete button
should be shown or hidden.  Make this happen, instead of needing to
reload the page manually.

Change-Id: I77151f49447992d488ca42deb3389d1ea8c29d53
Reindex: Include exception cause when dying

Change-Id: I2602b2b857a594fb65e5b791bb14f888c95ff4c5
Link to solved issues from 2.9 release notes

This adds some more features and bug-fixes to the release notes.

Change-Id: I478172f75c140374fb61b45dcd0c3c01cd3c497f
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
Merge "Show/hide the delete button when branches change" into stable-2.9
Allow publishing old non-current patch sets

Change-Id: I32ec6a514c20c44f86aaa823cca157181b56c96e
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>