Feature/monomap

First commit of the new Choropleth Wizard on the main branch (made by Senn Julien)

The Choropleth Wizard is an interactive map builder. That module is a tool for building a choropleth map on the fly. It allows the user to easily display on a map the data relating and configuring the display.
 
The tool is separated into two different parts. The first shows the data in a frequency graph and allows to parametrize the classes distribution or the statistics method. The second configures the render parameters of the map like color, stroke and drawing method.