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

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

* remotes/upstream/master:
  DE strings, correction of a typo
  diabok-themes: fixed bug in green-wide and dark-wide
  diabook-themes: small fix in nets_aside, group_aside and delete obsolete .tpls in subfolders
  diabook-themes: bugfix in admin-section
  allow bbcode representation of html symbols such as © by wrapping in bb brackets
  protect jappixmini/proxy from typo check, more work on email2 connector

* master: