Ahodges/doc/relnotes20140826

@srpearce , @explorerleslie , @jzoldak please review and tag others to do so as appropriate.
I'd use "click" instead of "select" ("select" sounds like the user is choosing something from a list), and I'd make it a little more streamlined:

... click the "Settings" icon, and then click **Hide from Students**.

If you want to keep it more as-is, I'd suggest adding "box" after "dialog" (just sounds a little better).