Merge pull request #1224 from ssushma/dev-branch

Changes for mouse event handlers implemented on the header bar
Rectified css issue with my classes.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
UI changes
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1225 from VinRudramurthy/dev-branch

Rectified css issue with my classes.
Changed hover state for resource thumbnails
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1226 from SurabhiSeetharam/dev-branch

Minor UI and text changes and changed hover state for resource thumbnails
Fixed issue on 'Resource already exists' popup when adding a new resource.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Resource thumbnail issue on PPP page has been resolved
Merge pull request #1227 from SurabhiSeetharam/dev-branch

Fixed issue on 'Resource already exists' popup when adding a new resource.
Header bar top align issue- Resolved