Merge pull request #741 from anilgooru/dev-branch

fixed timer null exception.
Implemented blocked user authentication while assigning and customizing a collection.
Merge pull request #742 from VinRudramurthy/dev-branch

Implemented blocked user authentication while assigning and customizing a collection.
sausd library topic level included for displaying the lessons and collections
fixed Standard tooltip box tolltip sticks at other pages
"Old user gooru Accounts publish status issue resolved."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #743 from nutan-gooru/dev-branch

Fixed Standard tooltip box tolltip sticks at other pages
Merge pull request #744 from mitraj/dev-branch

"Old user gooru Accounts publish status issue resolved."
"added id's ,alt and title"
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #745 from suryanarayanakb/dev-branch

"added id's ,alt and title"
Added new subject and body text while sending e-mail. Implemented for resources.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #746 from VinRudramurthy/dev-branch

Added new subject and body text while sending e-mail. Implemented for resources.
"Added id's,alt and title"
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #747 from suryanarayanakb/dev-branch

"Added id's,alt and title"
Concept Level Folder handled to support "Collection + Quiz"
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch