ADD info trace for startup
FIX some database errors at startup
FIX database error startup log messages
Merge pull request #463 from telefonicaid/hardening/log_startup_completed

ADD info trace for startup
Merge pull request #467 from telefonicaid/bug/71_comment

Issue 71 + statistics harness test
Merge branch 'develop' into bug/38_contextValue_not_mandatory