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.
Merge pull request #2245 from ssushma/release-6.6.3.a1

changes for ratings filter, implemented.
"published collections API integrated for profile Analytics Page"
"New DO Files added for profilepage analytics"
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1

Conflicts:
	src/main/java/org/ednovo/gooru/server/request/UrlToken.java
Merge pull request #2246 from sravanthi1/release-6.6.3.a1

"published collections API integrated for profile Analytics Page"
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1