#57
Merge remote-tracking branch 'origin/wuic-0.4.0-snapshot' into wuic-0.4.x-snapshot

Conflicts:
	modules/core/src/main/java/com/github/wuic/engine/impl/embedded/CGAbstractSpriteProvider.java
	modules/core/src/main/java/com/github/wuic/engine/impl/embedded/CGCssSpriteProvider.java
	modules/core/src/main/java/com/github/wuic/engine/impl/embedded/CGJavascriptSpriteProvider.java
	samples/css-sprite-sample/src/main/webapp/index.jsp