Merge pull request #2103 from mitraj/release-6.6.3.a1

QA [My Collections] Add course pop-up blocking further flow of user issue resolved
Character limits Message is Incorrect for Explanations issue resolved.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1