SVG

Read the following for SVG support:
 * Manual:Image Administration - how to set SVG up properly.
 * Manual:$wgFileExtensions - add 'svg' to permitted extensions
 * Manual:$wgSVGConverters - where the image converters are
 * Manual:$wgSVGConverterPath - tell it where your SVG converter is if it's not in $PATH
 * SVG benchmarks - librsvg vs Batik vs InkScape vs ImageMagick