Collection-part Bugs resolved, Search implemented for Page and UI modified for Page & Quiz Modules 



* Collection-part bugs resolved
  - By default, collection's FROM-list is now contains heterogenous elements.
  - The current selected node doesn't gets reflected in it's collection's list.
  - Still one bug exists: While creating GAPP, collection-list remains heterogenous (radio buttons are not working).. working on it!!
  
* Search implemented for Page module

* UI modified for Quiz and Page module