Merge pull request #3 from LT1100/master

Administrator Panel Layout
Update the Meeting Panel for getting employee list.
test
Added addWindowListener for window closing event. So the program can be
terminiated everytime when clicked the cross.
Changed the meeting panel to work with employee data from the database
Updated genAvailableTime()
added some changes to the panels
Merge pull request #4 from Brianified/master

changed the panels
Correct the genAvailableTime().