Css flexible

The definitionlist plugin does not set any class name to the dl element, and style rules defined in the style.css in the plugin directory may affect rules with my own rules in the conf/userstyle.css for dl, dt, dd elements. This makes me difficult to define user own rules for the definition list. This request contains three commits, of two are to increase css flexibility of the definitionlist plugin:
* plugin config variable "stylename" for dl element
* use plugin config variable "dt_fancy" instead of DL_FANCY

The admin can set appropriate value through the Configuration manager. Language files prepared for English and Japanese. This request also contains removal of old function getInfo() replaced by plugin.info.txt file since DokuWIki 2009-12-25 Lemming.

Thanks for your setup gitHub repository of the definitionlist plugin for better source accessibility.

Satoshi