Adding Missing Image.
Removed duplicate ui:field id.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  "Chnages done for top and bottom scores "
  Hide the Teacher view banner in student page.
Merge pull request #1978 from anilgooru/dev-branch

Dev branch
Merge pull request #1979 from suryanarayanakb/dev-branch

Hide the response tab and feedback send html
Made extra efforts label hidden
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1980 from ssushma/dev-branch

Made extra effort label hidden
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch