All images referenced inside the main stylesheet or the HTML files now get revved.
Revving of images inside CSS or HTML is now optional via default.properties, the length of filenames now depend on hash.length, by default all images within the main stylesheet get revved.
Merge branch 'feature-rev-image-filenames' of https://github.com/ziggys/ant-build-script into ziggys-feature-rev-image-filenames
Merge branch 'ziggys-feature-rev-image-filenames' into 1.0

Conflicts:
	config/default.properties