Refactored ClassNameConstants and UIClassNameConstants
* Replaced class references with strings
* Removed unused dependencies
* Added test to check that static class names are correct
* Removed redundant methods from constants classes
* Adjusted import in code generators
Regenerated CS with current SDK
Merge branch 'master' of https://github.com/DevBoost/EMFText.git

Conflicts:
	Core/SDK/org.emftext.sdk.codegen.resource.ui/META-INF/MANIFEST.MF
Restored manifest (deleted by Git?!)