[FIX][IMP] Make partner maps work properly

[FIX] website*: unfuck buggy controllers
[IMP] website*: display GoogleMap in a human-usable interface
[IMP] website_google_map: large module cleaning
      - There is now only one controller, data is sent once for all!
      - Map is now fully resizable in its hosting template
      - HTML/CSS cleaning
      - JavaScript is now human-readable ;-)