Merge pull request #37 from jkuk/master

Minor updates on manager classes
Added the simple GUI design for the Calendar, User Management, and Email panels.
Merge pull request #38 from RichardHayesMassbay/master

Added three GUI panel designs
Participant moved to BackEnd
Merge pull request #39 from daverboy23/master

committing
added privileger manager class, moved email, added jar for email, added proper exception handling to manager classes