Defined REPOSITORY cache file. Improved log messages. Cleanup

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Brought back functionality of automatic updates of definitions for "install" and "dependencies" tasks. No additional "sofin update" is necessary anymore.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>