automatic configuration of webacula

added webacula-config to automatically configure webacula and the database
  add a own database user "webacula" for accessing the bacula/bareos database
  removed db.conf, because data is taken from config.ini
  no default DB
don't preset the timezone. Take system default.
added sudo configuration
prepare handling of databases on differnet hosts
set default http configuration to APPLICATION_ENV development.
  Otherwise configuration errors are to hard to find.
Allow access from everywhere, not only localhost.
Add SPEC file for obs (openSUSE, SLES, RHEL, CentOS)
Set version to 5.5.2.5.