"save functionality changes done"
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1

Conflicts:
	src/main/java/org/ednovo/gooru/client/mvp/analytics/collectionSummaryTeacher/CollectionSummaryTeacherView.ui.xml
	src/main/java/org/ednovo/gooru/server/service/AnalyticsServiceImpl.java
Merge pull request #2483 from suryanarayanakb/release-6.6.3.a1

Save functionality changes done
Merge pull request #2484 from ssushma/release-6.6.3.a1

Ratings filter refresh issue resolved
"FE default image broken issue fixed"
"FE default image broken issue fixed"
Merge pull request #2486 from suryanarayanakb/release-6.6.3.a1

FE default image broken issue fixed
Grades and standards clear implemented