Merge pull request #1827 from anilgooru/dev-branch

Added event for changing the button selected.
Implemented pagination for student details.
Resolved conflicts.

Conflicts:

src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/UnitAssignmentView.java

src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/personalize/PersonalizeUnitView.java
Merge pull request #1828 from VinRudramurthy/dev-branch

Implemented pagination for student details.
Disabled personalize button.
Merge pull request #1829 from VinRudramurthy/dev-branch

Disabled personalize button.
Update Status to Assignment
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1830 from skumarreddysingiri/dev-branch

Update Status to Assignment
Changed the session from FS to CS.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  Update Status to Assignment
  Disabled personalize button.
  Implemented pagination for student details.