BUMP TO... ** 2.23 **, ZOMG!!
Merge branch 'master' of github.com:globaleaks/GLBackend

* 'master' of github.com:globaleaks/GLBackend:
  insert a timebuffer to avoid Travis false negative
  unexpected bump! GlobaLeaks version 2.23
update glbackend to 2.23.1
Replace vittorio arrigoni picture with a more neutral image
minor fixes for: https://github.com/globaleaks/GlobaLeaks/issues/390
minor fixes for: https://github.com/globaleaks/GlobaLeaks/issues/390 ...
minor fixes for: https://github.com/globaleaks/GlobaLeaks/issues/390 ...
fix against inssue https://github.com/globaleaks/GlobaLeaks/issues/389
fix against issue https://github.com/globaleaks/GlobaLeaks/issues/398
fix against issue https://github.com/globaleaks/GlobaLeaks/issues/229
fixed a bug related to previous commit
.travis.yml aligned to GLClient
fixed issue https://github.com/globaleaks/GlobaLeaks/issues/86
better implementation of HTTP Exception handling
fixed a bug related to keep-alive connections and protocol status variables.
addressed issue https://github.com/globaleaks/GlobaLeaks/issues/153
updated apparmor profile for pidfile
password checks aligned between GLClient/GLBackend admin/receiver
Merge pull request #122 from globaleaks/feature/password_security_enforcements

password checks aligned between GLClient/GLBackend admin/receiver
Merge pull request #119 from globaleaks/issue/153

addressed issue https://github.com/globaleaks/GlobaLeaks/issues/153