"Added the close button for popup"
Handling the null
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1
"Added gwt analytics files"
"analytics integration"
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1

Conflicts:
	src/main/java/org/ednovo/gooru/server/service/UserServiceImpl.java
	src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.java
	src/main/java/org/ednovo/gooru/shared/i18n/MessageProperties.properties
"Changes made for analytics"
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1
"Integrating the gwt analytics in player"
Merge pull request #2302 from mitraj/release-6.6.3.a1

Set the selected filter values when pre-filter popup opens.
Merge pull request #2301 from suryanarayanakb/release-6.6.3.a1

"integrating the gwt analytics"
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