Merge pull request #1044 from SurabhiSeetharam/dev-branch

Changed background color of search filter to white
Added new 404 html file.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  Changed resource names from plural to singular
  Changed background color of search filter to white
Merge pull request #1045 from anilgooru/dev-branch

Added new 404 html file.
Implemented : Add OER Tag in search results
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
Merge pull request #1046 from anilgooru/dev-branch

Implemented : Add OER Tag in search results
Implemented change Mobile Friendly Tag
call refersh event for workspace
Enabling window scroll on adding question fixed.
Merge pull request #1047 from nutan-gooru/dev-branch

Implemented change Mobile Friendly Tag
added new class for 500 error.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  call refersh event for workspace
  Implemented change Mobile Friendly Tag
Merge pull request #1048 from anilgooru/dev-branch

Enabling window scroll on adding question fixed.
Added missing image.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
"Can't delete folder issue resolved."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1049 from mitraj/dev-branch

Can't delete folder issue resolved.
implemented Need to show end time and end page + have error message if beyond length