Merge pull request #1556 from anilgooru/release-6.6.3.a1

changed from visible to visibility (css)
Merge pull request #1570 from Gooru/release-6.6.3.a1

Release 6.6.3.a1
Merge pull request #1585 from Gooru/release-6.6.3.a1

Release 6.6.3.a1
Merge pull request #1629 from Gooru/release-6.6.3.a1

Remove beta for FE and change fav icon.
Merge pull request #1638 from Gooru/release-6.6.3.a1

Updated from image to icon.
Merge pull request #1652 from Gooru/release-6.6.3.a1

Updated from icon to png image.
Merge pull request #1803 from Gooru/release-6.6.3.a1

Release 6.6.3.a1
Merge pull request #1814 from Gooru/release-6.6.3.a1

Issues for new library resolved
Merge pull request #1855 from Gooru/release-6.6.3.a1

TIPCAL library integrated
Merge pull request #1860 from Gooru/release-6.6.3.a1

UI Alignment issue resolved
Merge pull request #1874 from Gooru/release-6.6.3.a1

Disabled Mixpanel....
Merge pull request #1891 from Gooru/release-6.6.3.a1

View count update API call commented from FE
Merge pull request #1921 from ssushma/release-6.6.3.a1

youtube channel url can be uploaded as webpage.
"Disable and enable standards functionality integrated for Add resource popup and Add Question Popup in Collection Edit"
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1
Merge pull request #1922 from sravanthi1/release-6.6.3.a1

"Disable and enable standards functionality integrated for Add resource popup and Add Question Popup in Collection Edit"
Folders: Added click handler for down arrow and changing the positions and added comments.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Implemented select dropdown issues in CollectionInfo page and Assign page
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1