Make projects only visible to users with permissions to see them
Fix signing up feature
Restrict reading tickets to correct project scope.
Restrict creating tickets to only users who have permission to do it
restrict ticket updating to only those who have permission
Restrict destroy action to only people with permission
Restrict actions in TicketController based on permission and hide links
Add permissions screen for admins
Add creating, editing, updating and deleting tickets to assigning permissions interface
Add seeds