Correct InvalidAggregateAction translation&format.

InvalidAggregateAction .looks like:
 class InvalidAggregateAction(Invalid):
     msg_fmt = _("Cannot perform action '%(action)s' on aggregate "
     "%(aggregate_id)s. Reason: %(reason)s.")

The values for action are not well formed and reason are not translated.
This patch fixs those problems

Change-Id: I9ed20badde8a38eb71c5f121f30e4d54ad50022e
Closes-Bug: #1278736
Merge "Correct InvalidAggregateAction translation&format."