[Buildbot] #3297: add rebuild button to UI

[Buildbot trac]

#3297: add rebuild button to UI
--------------------+-----------------------
Reporter:  vlovich  |      Owner:
    Type:  defect   |     Status:  new
Priority:  major    |  Milestone:  undecided
 Version:  master   |   Keywords:
--------------------+-----------------------
 The rebuild button is a quite useful feature in the 0.8.12 UI.  Unclear if
 this is just a configuration issue or what but it's missing from the
 default web UI.  If it's a configuration issue, should be called out in
 the release notes.

--
Ticket URL: <http://trac.buildbot.net/ticket/3297>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation