* Added dataTables search capability to Directory.
* Modified login style and added new stylesheet file.
* Changed sidebar items.
* Moved sidebar to Core folder.
* Added comments to some jsp files.
Adding Robin's changes for Concurrency Control and PYPA sponsor's functionality
Merge branch 'robin_Devbranch' into jerin_Devbranch
Merge branch 'robin_Devbranch'
* Changes after context path was changed from ICANJ to /.
* Added validation library and tested some validation changes.
* Hide side navbar and added facebook like side menu bar.
* Corrected old references.
* Adding new css and js library files
* Validation in registration page.
* Fixed alert system for all pages.
* Validation in registration page.
* Fixed alert system for all pages.