Merge pull request #1734 from ssushma/dev-branch

Collection Creation and item sequencing issues resolved
"Implemented click handler to redirect to units page when clicked from unit title in Assignments page for teach view."
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
ui issues fixed.
Merge pull request #1735 from sravanthi1/dev-branch

"Implemented click handler to redirect to units page when clicked from unit title in Assignments page for teach view."
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  "Implemented click handler to redirect to units page when clicked from unit title in Assignments page for teach view."
  Create collection and item sequence changes implemented
  Change dirction and duedate parameter
  Previous Class units are displayed at newly created class issue resolved
Merge pull request #1736 from anilgooru/dev-branch

ui issues fixed.
Deleting unit issue resolved