matchbox-keyboard: general clean up

Re-order variables, use $PN more, and merge the -dbg packages together.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
matchbox-keyboard: add RRECOMMENDS to matchbox-keyboard-applet

The keyboard is more useful with the applet, as it means that you can hide it.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
matchbox-session-sato: start the keyboard applet if we have no keyboard

If the formfactor says we have no physical keyboard, add the keyboard applet so
the user can force the keyboard to show/hide on demand.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>