updated bottom nav icons
styled instruction tabs
added event icon
Merge pull request #45 from harrysboileau/more_styles

More styles
Added date field in event, changed event creation form to support date, added model logic to display hour/minute form of time as appropriate.
Added date field in event, changed event creation form to support date, added model logic to display hour/minute form of time as appropriate.
rebased merge conflict with events and event controller
Added date field in event, changed event creation form to support date, added model logic to display hour/minute form of time as appropriate.
rebased merge conflict with events and event controller
Merge branch 'event_date_and_time' of https://github.com/harrysboileau/pupular into event_date_and_time