Merge pull request #2436 from ssushma/release-6.6.3.a1

Search filters toggle issue resolved
filter encoding issue resolved.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2437 from mitraj/release-6.6.3.a1

Filter encoding issue resolved.
Grade filters issue resolved on top filters close option