This servicetype has gone, since popups are entirely managed by the
applets compactRepresentation property and minimum size. The service
type has already gone, so don't look for them anymore.
- return after starting the install job instead of exiting. This only
works accidentally, since the start of the job happens inside this
event loop cycle, it will leave installation in a random state for
larger payloads. The fix is easy: only exit after installing.
- improve output: report installation, deinstallation and upgrade
consistently to cout.
- Now all operations correctly exit with either 0 or 1, so plasmapkg
will work fine in scripts.
