Merge pull request #789 from Gooru/dev-branch

SAUSD Pagination APIs implemented
Merge pull request #811 from Gooru/dev-branch

Blocker issue for moving assignments only across pagination results issue resolved.
Merge pull request #827 from Gooru/dev-branch

Implemented stories for 6.4-patch
Merge pull request #829 from Gooru/dev-branch

compilation error resolved
Merge pull request #844 from Gooru/dev-branch

6.4 Patch release stories and bugs implemented.
Merge pull request #851 from Gooru/dev-branch

6.4 Patch release stories and bugs implemented.
Merge pull request #855 from Gooru/dev-branch

Bugs fixes
Merge pull request #867 from Gooru/dev-branch

Bugs fixes for 6.4 patch
Merge pull request #869 from Gooru/dev-branch

spelling mistake has been fixed.
Learning objective issue has been fixed.
Merge pull request #883 from shivalinga/master

Learning objective issue has been fixed.
Add course, delete course, add standards and deleteStandards API's has
been updated.
Merge pull request #888 from shivalinga/master

Add course, delete course, add standards and deleteStandards API's has been updated.
Null pointer exception has been handled.
Merge pull request #891 from shivalinga/master

Null pointer exception has been handled.
Fixed District Logos jumping using Absolute positions
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Quizzes in Community library implemented
New events updated for Quiz data
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch