Merge pull request #1850 from ssushma/dev-branch

null pointer exception handled
added cursor for right arrow.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  null pointer exception handled
  collection empty issue handled
  Class Code is too light issue resolved.
  Move assignment issue resolved
  AssignmentWidgetView Pagination Bug is fixed
  updated assignment count after moving into another unit at reorder popup.
  Showing horizontal scroll bar in reorder drop list issue resolved
Merge pull request #1851 from anilgooru/dev-branch

added cursor for right arrow.
UnitHeading changes in UnitView
Merge pull request #1852 from skumarreddysingiri/dev-branch

UnitHeading changes in UnitView
showing hypons when there is no alalytic data functionality has been
implmented.
Merge pull request #1853 from shivalinga/dev-branch

showing hypons when there is no alalytic data functionality has been implemented.
reports tab coming soon popup added and validation for 24 hrs removed in collection assign.