SD-364 : Activity stream sync widget

Refactored and fixed notification.
SD-364 : Activity stream sync widget

Activity fixes.
SD-366 : New activities in the Activity stream

Finalized auto reload.
SD-351 : Server and API support for the Activity stream

Fixes for tests.
fix(SMTP) variables parsing
Merge pull request #168 from amagdas/master

fix(SMTP) variables parsing
SD-515 - On archive audio and video packages on ingest fetch, the reuters provider return not found error
SD-515 : On archive audio and video packages on ingest fetch, the reuters provider return not found error

Deleted print call and added logging call
Merge pull request #171 from ioanpocol/master

SD-515 - On archive audio and video packages on ingest fetch, the reuters provider return not found error
SD-514 - Ingest package don't fetch subitems and on ingest preview an error is showed
SD-515 - On archive audio and video packages on ingest fetch, the reuters provider return not found error
Merge pull request #173 from ioanpocol/master

SD-514 - Ingest package don't fetch subitems and on ingest preview an error is showed
SD-491: added authors to content items-including text items
fix(review-comments) - don't send the whole list of documents
Merge pull request #175 from amagdas/authors

feat(authors) - add authors to content items
fix(archive-set-version) use HTTP PUT method to revert the version
Merge pull request #174 from amagdas/revert-version

fix(archive-set-version) use HTTP PUT method to revert the version
Merge branch 'master' of github.com:superdesk/superdesk-server

Conflicts:
	superdesk/activity.py