Make projects only visible to users with permissions to see them
Don't show projects that a user doesn't have permission to see
Fix signing up feature, take user to alternate confirmation page
Restrict reading tickets to correct project scope
Restrict creatings tickets to only users who have permissions to do it
Restrict ticket updating to only those who have permission
Restrict destroy action to only people with permission
Restrict actions in TicketsController based on permissions and hide links
Add permissions screen for admins
Add creating, editing, updating and deleting tickets to assigning permissions interface
Add feature for deleting users, including protection against self-deletion