Merge pull request #1 from Ayrx/master

Add // Delete // Export to CSV
count of registered user
Merge pull request #2 from junnn/Junhao

count of registered user
Added in security constraint for the module.
Merge pull request #3 from Ayrx/master

Added in security constraint for the module.
Added in sort and refresh capabilities to the celltable.
Merge pull request #4 from Ayrx/master

Added in sort and refresh capabilities to the celltable.
pager
Workable Pager
minor changes
Merge branch 'Junhao' of github.com:junnn/rhc2013_admin into junnn-Junhao

Conflicts:
	src/main/java/org/redhatchallenge/rhc2013/client/UserScreen.java
checkBoxAll
checkBoxAll
Merge pull request #6 from junnn/checkAllBox

Check all box
Setting the verified status of a student will now assign timeslots and questions.
Fixed bug that links the verified and status column to the selection model
Merge pull request #7 from Ayrx/master

Assignment of timeslot and questions // Bugfix
Tables Sortable
Merge pull request #8 from junnn/sorting

Tables Sortable
List available contestant w/o timeslot(in China Region)