Prefilter ui modified.
Merge pull request #2240 from ssushma/release-6.6.3.a1

User profile api changed to v2
Merge pull request #2239 from mitraj/release-6.6.3.a1

Prefilter ui modified.
Search: Integrated resource tags API.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2242 from VinRudramurthy/release-6.6.3.a1

Search: Integrated resource tags API.
[Prefilter] implemented standards filter in prefilter popup
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2243 from mitraj/release-6.6.3.a1

[Prefilter] implemented standards filter in prefilter popup.
changes for ratings filter, implemented.