Added spring message and theme support for POJO model attributes.
Merge branch 'spring-mvc-extension'

Conflicts:
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/annotation/EnableMustache.java
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/config/MustacheConfiguration.java
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/mustache/SpringFeaturedMustacheFactory.java
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/mustache/SpringFeaturedVisitor.java
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/mustache/code/MessageSourceCode.java
	spring-mvc-extension/src/main/java/nl/onedott/mustachejava/extension/springmvc/mustache/code/ThemeCode.java
	spring-mvc-extension/src/test/java/nl/onedott/mustachejava/extension/springmvc/mustache/SpringFeaturedMustacheFactoryTest.java