Added Mixpanel events for Customize/Assign popups.
included California Social Science Standards and CA-ELD Standards in Standards Preference
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
new text for standards
Changed logic of clickhandler for reviews in search page.
Merge pull request #1152 from ssushma/dev-branch

css changes for popups and upload text file changes - implemented
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Merge pull request #1153 from mitraj/dev-branch

Added Mixpanel events for Customize/Assign popups.
Merge pull request #1154 from nutan-gooru/dev-branch

Included California Social Science Standards and CA-ELD Standards in … …
Merge pull request #1155 from VinRudramurthy/dev-branch

Changed logic of clickhandler for reviews in search page.
added tags ui in edit resource popup
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Reverted resource tag while creating new resource.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch
Error message changed.
Merge pull request #1156 from nutan-gooru/dev-branch

Added tags ui in edit resource popup
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.
Added privacy messages for email.