Error message changed.
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch

* upstream/dev-branch:
  added tags ui in edit resource popup
  Changed logic of clickhandler for reviews in search page.
  new text for standards
  included California Social Science Standards and CA-ELD Standards in Standards Preference
  Added Mixpanel events for Customize/Assign popups.
  css changes for popups and upload text file changes - implemented
  Top Navigation bar position has been fixed.
Resolved google drive file add.
Merge pull request #1157 from VinRudramurthy/dev-branch

Reverted resource tag while creating new resource.
Merge pull request #1158 from anilgooru/dev-branch

Error message changed.
"Making all popups in center."
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Classpage sort options issue resolved on Assignments tab click.
Merge pull request #1159 from mitraj/dev-branch

Making all popups in center.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Print statements for User file upload feature
Merge pull request #1160 from ssushma/dev-branch

Print statements for User file upload feature
implemented  California Social Science Standards and CA-ELD
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1161 from nutan-gooru/dev-branch

Implemented California Social Science Standards and CA-ELD
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch