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
css issues fixed and new grade values are added in url
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2303 from suryanarayanakb/release-6.6.3.a1

Converting the time to mille seconds
Merge pull request #2304 from mitraj/release-6.6.3.a1

Css issues fixed and new grade values are added in url.
My Collections: Implemented optional features while adding pdf or image.
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
Grade filters enabled and CSS Issues Resolved for Only Resources with Reviews
Merge pull request #2308 from ssushma/release-6.6.3.a1

Grade filters enabled and CSS Issues Resolved for Only Resources with Re...
Added static text in Messages praperties file.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2309 from mitraj/release-6.6.3.a1

Added static text in Messages properties file.
Modified filter values based on Api request parameters