Event Retrieval Updates

[r-holland]

• Optimize front end event retrieval (no lag time when changing views or date spans)
• Show all events in sidebar that appear on the right hand side of screen
• Add date separators in calendar side bar, scroll to first event in day when day changes
• Remove search bar and replace with date selector (will add search view soon)
• Add lots of intuitive behavior (i.e. switch to day when an event in that day is selected)
• In general, front end logic now only updates variables when necessary (avoid redundancies)
• Remove redundant and unused code, add documentation, increase consistency/clarity
• Filter behavior is correct within a specific view, but is reset on new view (can easily change this)