toggle method added.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2305 from VinRudramurthy/release-6.6.3.a1

My Collections: Implemented optional features while adding pdf or image.
Search filter improvements implemented
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2306 from ssushma/release-6.6.3.a1

Search Filter improvements implemented
My Collections: Implemented Advanced optional fields while editing a uploaded file.