Merge pull request #1282 from nutan-gooru/dev-branch

Fixed Most of Thumnail images do not show up
"FOlders levels issue resolved"
"new Files added to resolve folder levels issue when collection is added."
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #1283 from sravanthi1/dev-branch

"Folders levels issue resolved"
"Question resource info issue in search resolved."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1284 from mitraj/dev-branch

Question resource info issue in search resolved.
"MyCollections Selection issue resolved "
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #1285 from sravanthi1/dev-branch

"MyCollections Selection issue resolved for folders "
Fixed Remix (Customizing) the collection from library navigates back to My Collections tutorial page
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1286 from mitraj/dev-branch

Fixed Remix (Customizing) the collection from library navigates back....
Fixed On assign a collection to class and clicking on the class name from the popup shows