make projects only visible to users with permission to see them
don't show projects that a user doesn't have permission to see
fix signing up feature, take user to alternative confirmation page
restrict reading tickets to correct project scope
remove unneeded tests
restrict creating 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 files
add seeds