Fixed issue with not loading default image in Firefox in study page
Fixed logo center issue in email.
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2

* upstream/release-6.2:
  Language objective and Teacher Tip Save issues Resolved
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
folder meta data info character validation done upto 600 characters
Merge remote-tracking branch 'upstream/release-6.2' into release-6.2
player is grayed out and can't perform any action issue resolved
Message updated.
Fixed : [Organize - Content Tab] Educational Use, Standards are not saved
Merge pull request #133 from chandrasekharv/release-6.2

Folder meta data info character validation done upto 600 characters
Merge pull request #134 from mitraj/release-6.2

 player is grayed out and can't perform any action issue resolved
Merge pull request #135 from nutan-gooru/release-6.2

implemented delete standards taxonomy
Merge pull request #136 from anilgooru/release-6.2

Release 6: [Organize - Content Tab] Educational Use, Standards are not saved.
fixed Error message is not correct
Merge branch 'release-6.2' of https://github.com/Gooru/Gooru-Web into release-6.2