Show event's start date (instead of publication date) for Event-like objects in Basic, Collection and List tiles
Merge branch 'master' into event-date

Conflicts:
	CHANGES.rst
Add tests for Event dates
Refactor Date method to avoid redundant code
Merge pull request #444 from collective/event-date

Show event's start date (instead of publication date) for Event-like objects
Merge branch 'master' of https://github.com/collective/collective.cover
Another go at fixing carousel tile Robot Framework test: More precise selectors & postpone test of first slide until we are in default view #378