* Remove deprecated analytics role
* Make anchor tag a bit more readable
* Add OrganizationMembership table and model
* Add organization_membership associations
* Add unique indices for user_id and org_id
* Wrap update and create calls in transactions
* Remove specs of deprecated analytics_beta_tester
* Add CSRF tags to welcome index page
* Clean up auth service code a bit
* Add analytics role to approved org org_admins
* Add toggle links for org admins with no posts
* Fix wrong role name and add test
* Adjust validation for user fields
* Add test for user_role_service
* Fix confusing boolean