Added swingx to Calendar lib.
Added a DatePicker Panel
Replaced JCalendar with DatePickerPanel

DatePickerPanel isn't displaying month view yet
Added Color stuff for DatePickerPanel
date picker displays 1 month, allows selection of range of dates
Allow selecting multiple days at a time.
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/DatePicker
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/DatePicker
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/DatePicker
added ReturnDates method to DatePickerPanel that returns all selected dates
Merge branch 'dev' into feature/DatePicker
Added getdate function to datepcikerpanel that returns first date of selection - temporary fix until event is modified
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/DatePicker
Merge branch 'feature/DatePicker' into dev