Fixed database load and deletion operations.

Fixed malfunctioning SQLite query statements. Still need to fix event
display.
Fixed Date Displays in Day View

By passing a GregorianCalendar object to the Day class, the date can be
more easily formatted to specification.
Merge remote-tracking branch 'origin/GUI' into DB
Fixed Date GUI  Exit

When date window is exit it now only exits the date window.
Fixed automic window closure, created shell window for editing events.
Modified Day constructor call to reflect changes in Day class
Merged GUI into DB