Implemented parts of visitors
Removed Antlr stuff
Merge origin/master

Conflicts:
	blaze-ee-utils/src/main/java/com/blazebit/persistence/CriteriaBuilder.java
	blaze-ee-utils/src/main/java/com/blazebit/persistence/expression/Expression.java
	blaze-ee-utils/src/main/java/com/blazebit/persistence/expression/FunctionExpression.java
	blaze-ee-utils/src/test/java/com/blazebit/persistence/ExtendedCriteriaBuilderTest.java
Some refactoring
Merge origin/master