Merge pull request #2191 from mitraj/release-6.6.3.a1

Add question charlimit css issue resolved.
Loading icon alignment issue resolved
Merge pull request #2192 from ssushma/release-6.6.3.a1

Loading icon alignment issue resolved
Loading icon alignment issue resolved
Merge pull request #2193 from ssushma/release-6.6.3.a1

Loading icon alignment issue resolved
Library share and remix popup issue resolved.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1