Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
"Modified and added new static text in MessageProperties file"
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
DO-5203 issue has been fixed.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1249 from VinRudramurthy/dev-branch

Handled null at class pages.
Merge pull request #1248 from mitraj/dev-branch

Modified and added new static text in MessageProperties file
Merge pull request #1250 from shivalinga/dev-branch

DO-5203 issue has been fixed.
Added New images for no-assignment classpage.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1251 from mitraj/dev-branch

Added New images for no-assignment classpage.
Library:collection and quiz highlight issue rectified.