turn off the statusbar when on a small screen/landscape
Thanks to Remigijus in Lithuania for this idea.
let modal bar slide horizontally
force buttons single line
1.7.17
Merge branch 'hotfix'

Conflicts:
	andropilot/build.sbt
	andropilot/src/main/res/layout/modal_bar.xml
	andropilot/src/main/scala/com/geeksville/andropilot/gui/MainActivity.scala
	andropilot/src/main/scala/com/geeksville/andropilot/gui/ModalFragment.scala
auto hide the sidebar if we are on a tiny screen and the joysticks are on
scrolly looks pretty good.
new ui looks good!
properly enable new style joystick views
fix nasty problem where service wouldn't stop on disconnect
fix arming options in new UI
smooth like butta