The reference to mini-services above are not full blown Android
services. Rather, they are utility classes which can be started,
stopped, and send broadcasts about their status.
Made the list of apps to install better, with buttons for install
or upgrade, and statuses for incompatible and installed.
"Confirm swap" background was white but should have been blue.
SwapWorkflowActivity now extends ActionBarActivity instead of
FragmentActivity so older devices have an action bar (though it is
not styled with blue action buttons on android-10 devices).