Moved classes Committee, Event, ScheduleItem, SubEvent, Task and TimeSchedule to EventSystem folder in BackEnd. Added changes dictated in e-mail to Committee, Event, SubEvent, and Task.
Merge pull request #29 from KettyLezama/master

Classes moved to EventSystem folder of BackEnd & changes done in classes.
moved files from BackEnd to UserSystem sub folder
Completed Exceptions and Modified all other files
Merge pull request #30 from andy2013march/master

Moved files from Backend folder to UserSystem subfolder, completed all Exceptions and modified files