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