Fix tooltip rendering for week and day views
Add initial spec tests for pat-tooltip.

Specifically test the behavior around the "source" parameter.
- par-calendar: Store user's selection of category, refs #366
- Update Makefile so that pat-calendar gets picked up by jshint
- Fixed jshint errors in pat-calendar
- Actually return the pat-calendar pattern so that it can be used with require
- Added test-stub for pat-calendar