Added an english translation of the website. * website/about.htm4, website/buildhtml.mk, website/contact-de.htm4, website/contact.htm4, website/development-de.htm4, website/development.htm4, website/donate-de.htm4, website/donate.htm4, website/download.htm4, website/img/funktionsweise-MXD2map-de.png, website/index.htm4, website/license-de.htm4, website/license.htm4, website/template_header.m4, website/img/funktionsweise-MXD2map.png, website/img/funktionsweise-MXD2map_small.png, doku/funktionsweise/funktionsweise-MXD-konverter.svg, website/img/funktionsweise-MXD-konverter.png, website/img/funktionsweise-MXD-konverter_small.png: English translation of the website. Added a new Makefile-Target 'images' to get the dokumentation-images into the site.

The Free Vector GeoData Osnabrück (Frida) is
Copyright (C) by Intevation GmbH and licensed
under the GNU General Public License (see COPYING.GPL).

Additional license agreement:

The GNU GPL has been chosen because no analog license
for geographic data does yet exists.
If in the future the Free Software Foundation Europe
officially accepts a Geographic Data license as to be analog
to the GNU GPL, Frida may be upgraded to this new license.