JDBC - Allow/document how to add/activate a new database type

By default, we will not embed most of the database driver.
We need to explain how the user will activate a new database type.

• add the driver jar file somewhere
• configure its path, default jdbc url, default driver class name
• restart service?
• anything else?

Proposed by TDP:

• have a config file in the Jdbc component, to give informations to the ui:

  type;jar;driver;url_template
  MySql;mysql-connector-java-5.1.2.jar;org.gjt.mm.mysql.Driver;jdbc:mysql://{host}:{port}/{database}
  #Oracle;xxx.jar;com.xxx.jar;xxx
  

• As much as possible, the config file must contain commented samples for most common DBs
• To add a new database type capacity to the component, admin will have to:
  • add physically the driver jar file
  • declare (add or uncomment or customize) it in the config file above