Updated changelog.
Added Spring 4.1 check to SpringVersionUtils
Improved MANIFEST jar metadata.
Auto-fix of XML indents.
Added missing dependency version properties.
Remove unused test dependencies.
Fixed improvement on MANIFEST metadata.
Merge branch '2.1-dev' into 3.0-dev

Conflicts:
	thymeleaf-spring3/pom.xml
	thymeleaf-spring4/pom.xml