improve reset_config to schedule fallback properly
let loop existance be a detector for full init

To avoid introducing a new attribute being set in run, prove existance of
loop attribute as such a flag
use a fallback for release_ts only when not given

Since new versioning scheme doesn't rely on build timestamps, the release_ts
must be set by deployimgs in manifest.
improve re-scan fallback and error handling
fix show-stopper bugs for 1st alpha hp2 system img

* remove bug when started with incomplete download
* fix weird behavior in error conditions (clean up error handling)