Actually, I'm seeing the sidebar when on the "My Settings" tab of the forums, all the other tabs including the forum itself, the sidebar does not show when logged in as the admin or regular user.
I've got a ticket open for the "My Settings" tab, so we should be able to get that fixed.
Jamroom5 skins use a grid system already, which makes them responsive for mobile devices. Is there a particular reason you want to use something different?
I don't believe anyone here has integrated that grid system.