Added Alerts object to handle alerts.
Support Messages object. Use full path to additional files/dirs.
Module to handle alerts.

Uses An::Msg_xlator to fetch message strings in right language, fill
in vars; An::Screen and AN::Mail ( TODO ) to dispatch messates to destination.
look up message strings based on a tag and desired language.

Uses existing AN::Common routiens to fetch read file, look up tag in a
particular language, substitute variables.
Message data file for scanner core.
Support Alert object queries.
Support agent data table, Alerts.
Deleted superfluous space character.
Dispatcher of Alert messages for SCREEN output.
Renamed default database to 'scanner'.
MOdified tests to support changes in FlagFile.
Added change ownership to alteeve: Running scripts as postgres, alteeve has no rights on database, just CRUD.
Added file to creaet alert_Listeners table and history.