checkbox-touch: replace buttons with latchButtons on resume screen

This patch replaces ordinary buttons with latching ones. It also makes tapping
on any of the buttons on resume screen to latch all of them

Signed-off-by: Maciej Kisielewski <maciej.kisielewski@canonical.com>
checkbox-touch: add -s to build-me

This patch adds an option to select which device to push the click package to.

Signed-off-by: Maciej Kisielewski <maciej.kisielewski@canonical.com>
"automatic merge of lp:~kissiel/checkbox/cbt-fixes/ by tarmac [r=zkrynicki][bug=][author=kissiel]"