Merge pull request #1236 from nutan-gooru/dev-branch

Fixed Change Mobile Friendly Tag
Concepts and lesson array changes implemented for library.
Merge pull request #1237 from ssushma/dev-branch

Concepts and lesson array changes implemented for library.
Multiple courses not updating issue - Resolved
Moving narration button top story has been implemented.
Merge pull request #1238 from ssushma/dev-branch

Multiple courses not updating issue - Resolved
Merge pull request #1239 from shivalinga/dev-branch

Moving narration button top story has been implemented.
Opened the library page from top.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
callback parameter changed to <callBackUrl>
callback parameter changed to <callBackUrl>
Merge pull request #1240 from VinRudramurthy/dev-branch

Opened the library page from top.
Merge pull request #1241 from ssushma/dev-branch

callback parameter changed to <callBackUrl>
"Implemented Nostudents,NoAssignment class ui."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch

Conflicts:

src/main/java/org/ednovo/gooru/client/mvp/classpages/edit/EditClasspageCBundle.java
Merge pull request #1242 from mitraj/dev-branch

"Implemented Nostudents,NoAssignment class ui."
Fixed click on Share or Remix, background revert to Community landing
resolved conflicts