2007-06-01  Dieter Hametner  <dh+vdr@gekrumbel.de>

	These changes fix bug entry #339
	* css-themeing.txt: describe how to do css themeing.
	* content.ecpp:
		- check for additional parameter and use it as mime
		  type.
		- use compile time variable USRDIR for path to the files
		  loaded via content.ecpp
	* pageelems.ecpp: link to css/siteprefs.css
	* pages/*.ecpp: changed style link to pageelems.stylesheet
		        component.
	* tntconfig.cpp: added MapUrl for css<something>/cssfile.