Removing old tables from the schema
Switching organization<->user relation to mean a subscription and creating the managing relation between them
Changed all references in the controllers and models to point to the new management relation between users and organizations
Adding a query to get all cities. Adding a query to filter posts by those that a user is interested in
Adding post filtering and integrating it into the posts feed. Added a field to posts specifying what organization it came from
Making Post::Filter also include the organization
Making a user subscribed to an organization he manages