Fix #722: Day view "understand" cat/loc/pub restrictions
- topcat for single top category id possible in calendar view
- catids and locids for id lists possible in calendar module
- pub to specify published/archived/both as possible in calendar module
Teaser mod: show day diff (fix #813)

If module is configured to show date relative to today this will be shown (additionally to abs. date inside image)
Merge pull request #814 from jemproject/development

Fixes from development branch for JEM 2.0 - allow calendars to limit day view