- Added RenameReplace.
- Added various tests.
- Update rule for apply.
Merge branch 'master' of https://github.com/cwi-swat/rascal.git

Conflicts:
	src/org/rascalmpl/library/experiments/CoreRascal/ReductionWithEvalCtx/EvalCtx.rsc
	src/org/rascalmpl/library/experiments/CoreRascal/ReductionWithEvalCtx/ReductionWithEvalCtx.rsc
	src/org/rascalmpl/library/experiments/CoreRascal/ReductionWithEvalCtx/RenameReplace.rsc
	src/org/rascalmpl/library/experiments/CoreRascal/ReductionWithEvalCtx/Tests.rsc