Merge branch 'master', remote-tracking branch 'remotes/upstream/master'

* remotes/upstream/master:
  slight improvement in handling of plaintext feeds
  css-fixes
  add new messages-layout in diabook
  fix the display of community-plugin in diabook-themes
  that didn't quite work out
  document tinymce fixes/workarounds
  various bugfixes and css-fixes
  qcomment overflow
  try slightly better detection of html in feeds
  send unverified private mail using zrl

* master: