bump to version 2.52.3
fixed issue: https://github.com/globaleaks/GlobaLeaks/issues/781
exported gpg key status on /receiver public API
...
fixed globaleaksadmin to restore password 'globaleaks' (mocha testing need it)
fixed is_expired bug (postpone wasn't well tested)
implemented ahmia description.json for ahmia HS search engine
Merge branch 'devel' of github.com:globaleaks/GLBackend into devel
removed rest.base, now in rest.requests
implemented working skeleton of stats for anomaly detection
implemented wizard handler and skeleton of default Fields
Merge branch 'devel' of github.com:globaleaks/GLBackend into devel
separated anomalies and statistics timings and classes
Merge branch 'devel' of github.com:globaleaks/GLBackend into devel
Merge branch 'master' of github.com:globaleaks/GLBackend

* 'master' of github.com:globaleaks/GLBackend:
  bump to version 2.52.3
  fine tuning of login delay (was raising so much also to be unit tested)
  fixed a bug in mail notification sched
  bump to version 2.52.2

Conflicts:
	debian/changelog
	globaleaks/__init__.py
created new tables stats, applicationdata and migration 9-10
Add support for coveralls
Merge branch 'master' into devel

Conflicts:
	.travis.yml
Make formatting prettier.
integrated wizard API with new table ApplicationData