SD-404 : Write more behave tests, especially for error flows

Updated behave tests, added support for tasks retries in case of errors
SD-404 : Write more behave tests, especially for error flows

Updated behave tests, added support for tasks retries in case of errors
Merge branch 'master' of https://github.com/ioanpocol/superdesk-server
SD-373 : Archive ingest task result - back-end implementation

Set crt time for _updated and _created attributes
SD-405: On test/development server redis and celery worker should be setup

Added redis-server as required service for travis
Spike endpoints
Refactor the endpoint names to *Model
Try to make all endpoints compatible with default Eve apps.
Fix failing tests
(fix) Flake8
Merge remote-tracking branch 'adrian/spike_endpoints'
SD-404 : Write more behave tests, especially for error flows

Updated behave tests, added support for tasks retries in case of errors
Merge branch 'master' of https://github.com/ioanpocol/superdesk-server

time for _updated and _created attributes

Conflicts:
	superdesk/archive_ingest.py

Conflicts:
	superdesk/archive_ingest.py
SD-404 : Write more behave tests, especially for error flows

Fixed a comment
SD-404 : Write more behave tests, especially for error flows

Added _created and _updated values on response
Chore(dependencies) - update Cerberus and Werkzeug, update tests and remove dead code
fix(elastic): put mapping after registering resources

by default it pushes mapping during app init, but we register
resources only after..
fix(procfile): setup celery worker process