Create configuration_database.rst

Added description of database specific parameters.
Update admin_manual/configuration_database.rst
Create configuration_automation.rst

added description of the automatic configuration file.
Update admin_manual/configuration_automation.rst
Update admin_manual/configuration_automation.rst

fixed internal links.
Update admin_manual/configuration_automation.rst
Create configuration_logging.rst

added description of logging parameters.
Merge pull request #40 from j-ed/master

documented the database settings and automatic configuration file