Merge pull request #1441 from mitraj/dev-branch

[My Collections] Answer box scrolling issue resolved.
Grades in Folder updated.
Merge pull request #1442 from ssushma/dev-branch

Grades in Folder updated.
accommodating lifeboard on dropmenu height increased in FE
Merge pull request #1443 from ssushma/dev-branch

accommodating lifeboard on dropmenu height increased in FE
fixed tutorial page issue from home page
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1444 from nutan-gooru/dev-branch

Fixed tutorial page issue from home page
error message css updated for grades
Merge pull request #1445 from ssushma/dev-branch

error message css updated for grades
Fixed displaying "Publisher : Publisher: " + UI issue at category title
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1447 from nutan-gooru/dev-branch

Fixed displaying "Publisher : Publisher: " + UI issue at category title
NSDL aggregator changes implemented
Merge pull request #1448 from ssushma/dev-branch

NSDL aggregator changes implemented
Under More Info some fields have an extra space before":" issure resolved