Merge apification Part I (start/stop, unpack, *db)

Merge branch 'apification' into develop
Nagios: add api for doing checks separately

Interesting quirck: check_process fix: health & critical log checks
dependent on _check_process. DUNNO implies that "we don't know yet, you
should do more checks" this is used for the "check" command, which is a
"check everything and give me one status" action.
Merge branch 'develop' into apification-versioning