Merge pull request #736 from ssushma/dev-branch

Conflicts resolved on student assignments mode.
Merge pull request #737 from ssushma/dev-branch

Issues with top bar navigation and Assignments Order Header added
Text Changes
Merge pull request #739 from SurabhiSeetharam/dev-branch

Text Changes
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Issues with top bar navigation hover solved