Style
significantly simplified util.output to fix RQ performance issues

Merge branch 'master' of ssh://github.com/allegro/ralph

Conflicts:
	CHANGES.rst
treat all discovery exceptions in interactive mode in the same way
Merge pull request #537 from ambv/master

Exceptions in plugins propagate
Merge pull request #536 from deshipu/master

Speed up bulk edit for foreign keys
Merge branch 'master' of github.com:allegro/ralph into deployment
Merge branch 'master' of github.com:allegro/ralph into deployment
hostname validation
hostname validation
pep8
pep8
Add supervisor config files for gunicorn and workers
Merge pull request #538 from deshipu/master

Add supervisor config files for gunicorn and workers
Compatibility with rq fixed
Fixed, again.
Merge branch 'master' of https://github.com/allegro/ralph
Merge pull request #539 from vi4m/cmdb_fix

Compatibility with rq fixed
Merge branch 'master' of https://github.com/allegro/ralph into cmdb_pagination
Fixed typos in the CMDB. Fixed lack of paginator in the CMDB. Fixed not-working filters, and fixed theirs appearance.
Merge branch 'master' of github.com:allegro/ralph