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
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.
Merge branch 'dev-branch' of https://github.com/Gooru/Gooru-Web into dev-branch