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

* remotes/upstream/master:
  diabook-theme: small fix
  diabook-theme: twitter-box-update at right_aside
  diabook-theme: can now set the twitter search term in theme-settings & small fixes
  consolidate item deletion so we can fix orphaned categories and file_as tags.
  DE: new email templates translated
  workaround to clean up orphaned filetags
  only show remove category to item owner
  Option to set theme width added. Minor layout changes

* master: