Added new event handlers to navigate to next assignments.
integration events for display next assignments.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  Nutan widget changes reverted
  "For standards not chosen in standards preferences, disable in standards browse Implemented."
  conflicts has been resolved.
  Resolved compilation issue.
  implemented analytics data in assignment view.
  assignment widget reveal place issue resolved
  Displaying unitDetails when user navigate from add assignments
  Reordering assignment with in the unit issue rectified.
  partially implemented displaying collection summary data.
"player analytics old version integration"
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #1839 from mitraj/dev-branch

Unit goals update event handled and validations added.
Merge pull request #1840 from suryanarayanakb/dev-branch

player analytics old version integration
Issue rectified with right and left arrow while reorder in unit details page.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1841 from VinRudramurthy/dev-branch

Issue rectified with right and left arrow while reorder in unit details page.
css style has been added for reaction hypon
Merge pull request #1842 from shivalinga/dev-branch

css style has been added for reaction hypon
Reverted : Changed the session from FS to CS.
Fixed issue with showing personalise screen and display next set of assignments on pagination.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  css style has been added for reaction hypon
  Issue rectified with right and left arrow while reorder in unit details page.
  "player analytics old version integration"
  "Unit goals update event handled and validations added."

Conflicts:
	src/main/java/org/ednovo/gooru/client/mvp/classpages/unitdetails/UnitAssignmentView.java
Merge pull request #1843 from anilgooru/dev-branch

Fixed following..
Showing horizontal scroll bar in reorder drop list issue resolved
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch