Merge branch '1.0.x' of gitorious.org:statusnet/mainline into 1.0.x

Merge branch '1.0.x' of gitorious.org:statusnet/mainline into 1.0.x

* '1.0.x' of gitorious.org:statusnet/mainline:
  Initial checkin of Poll plugin: micro-app to post mini polls/surveys from the notice form.
  Localisation updates from http://translatewiki.net.
  More doc comments on MicroApp stuff; some of the show-notice code & the ActivityStreams stuff is a bit wonky and may need smoothing out
  Doc comments for MicroAppPlugin
  mailboxes were wrongly overriding global menu