SVG Renderer

OK,

As you suggested:
1. I added parameter fit="extend|box" , where extend means that renderer will try to do the best to fill the empty space and fill entire width and height (this is parametrized but not implemented yet in renderer itself -> I will this later)

2. Renamed staticwidth, staticheight -> width, height, work both with param set and with not set (default values 800x600)

3. Tried to configure my NB to follow code conventions http://www.mediawiki.org/wiki/Manual:Coding_conventions#Indenting_and_alignment , let me know if I have to do more