no message
change Application controller to rescue access denied exception
current_user should be owner when he creates a board
use rolify to get owning boards and member boards
fix ability class user should have team member,viewer,admin,owner roles on boards
resourcify board model delete membership model just use rolify and change relation
fix user model methods using new relations and rolify
add cancan for views and fix some design bugs and routes bugs
delete membership table not necassary and change seed to test users with new roles and abilities