Merge pull request #2506 from suryanarayanakb/release-6.6.3.a1

Added thumbnail in the player service
Calling review API twice issue has been fixed.
Merge branch 'release-6.6.3.a1' of https://github.com/Gooru/Gooru-Web into release-6.6.3.a1
Merge pull request #2509 from shivalinga/release-6.6.3.a1

Calling review API twice issue has been fixed.
Calling review API twice issue has been fixed.
Merge pull request #2512 from shivalinga/release-6.6.3.a1

Calling review API twice issue has been fixed.
Fixed showing/hiding view admin portal issue.
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1

* upstream/release-6.6.3.a1:
  Calling review API twice issue has been fixed.
  Calling review API twice issue has been fixed.
  "Added thumbnail in the player service"
  "changed the print element"
  "clearing the frames and changed the question count"
  "Changes made for displaying the cursor icon and messages"
Merge pull request #2513 from anilgooru/release-6.6.3.a1

Fixed showing/hiding view admin portal issue.
Merge remote-tracking branch 'upstream/release-6.6.3.a1' into release-6.6.3.a1