Invitation foundation
reorganized Invitation.java, added HashMap for holding availability
Gets for invitations

Also fixed my name PAON

:)
Add scheduler button opens a create scheduler tab
Added Scheduler Tab

still needs work such as extra columns and button
Got adding to work

Also fixed some GUI side things
Added to the scheduler tab

Still needs a lot of work
delete CalendarItem.class and Clean up codes

Signed-off-by: Hui Zheng <fengyimzy@gmail.com>
Added update controller & observer
Fixed scheduling GUI things, check commit
did a bit of cleaning, started to have SchedulerList update from invitations in database
Fixed Bugs in updating Invitations
Cleaning & bug fixes for gets
Merge branch 'w2m' of https://github.com/Tommzy/wpi-suite into w2m

Conflicts:
	Core/WPISuite/WebContent/WEB-INF/lib/WPISuite-Interfaces.jar
Starting linking invitation panel stuff
Added refresh capabilities to SchedulerTable class
Added toolbar button + got refresh right
Fixed everything for w2m
Merge w2m into dev-team3