Bugfix: hide association columns for habtm
Bugfix: hide association columns for habtm

budree/active_scaffold,activescaffold/active_scaffold,AlbertoBarrago/active_scaffold,mallikarjunayaddala/active_scaffold,activescaffold/active_scaffold,budree/active_scaffold,mallikarjunayaddala/active_scaffold,mallikarjunayaddala/active_scaffold,activescaffold/active_scaffold,AlbertoBarrago/active_scaffold,budree/active_scaffold,AlbertoBarrago/active_scaffold