Merge pull request #154 from suryanarayanakb/release-6.2

Displaying standards from the standards array while editing a resource and question
check null condition to display default image
Merge branch 'release-6.2' of https://github.com/Gooru/Gooru-Web into release-6.2
Merge pull request #155 from nutan-gooru/release-6.2

check null condition to display default image
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2