Merge pull request #2184 from ssushma/release-6.6.3.a1

upload collection image issue resolved
Go back' and 'yes' button pushed down to outside of popup 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 #2185 from mitraj/release-6.6.3.a1

Go back' and 'yes' button pushed down to outside of popup issue resolved
Registration issue resolved, Firefox issue resolved
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1