Merge branch '0.8.x' of git@gitorious.org:laconica/dev into 0.8.x

* '0.8.x' of git@gitorious.org:laconica/dev:
  null for both args in conversation
  no limit on conversation stream
  fixed limit for conversations
  only show subscribe button in profile list for local users
  move peoplesearchresults class to action/peoplesearch
  only show subscription controls to owner