default the broker group to "default" so folks who only have 1 logical broker don't meed to mess with mq-client-$foo profiles
add some help to the APIs page if there are no endpoints running; also add a couple of helper methods for getting the default version & version id
add buttons for the really common stuff folks do on profiles (create, assign, copy) and reduced a little of the noise of the first row
tone down the create buttons