Added recurring checkboxes.
Added Recurring Event Panel. Validation and functionality missing.
Added Validation of recurring events.
Created persistent date storage in event recurring panel.
build Layout populates recurring event date.
Error label for number of occurrences added and functioning.
Minor GUI fix with errorLabel. Validation is functional for occurrences in recurring events.
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/RecurringEvents

Conflicts:
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/view/event/EventTabPanel.java
Fixed formattig issues in eventTabPanel.
Added error border for recurring events.
Recurring Days selected error label working.
Sets default for single day event.
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/RecurringEvents

Conflicts:
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/view/event/EventTabPanel.java
Fixed a typo in our observers
Added Recurring events to Event Tab Panel. Non-functional.
Merge branch 'feature/RecurringEvents' into dev
Merge branch 'dev' of https://github.com/CS3733Team1/wpi-suite into feature/help