Grammar bugfixes
Environment corrections
Merge branch 'haskellextensions' of https://github.com/lichtemo/layout-parsing into haskellextensions

Conflicts:
	jsglr-layout/test-offside/grammars/haskell/Haskell.tbl
	jsglr-layout/test/org/spoofax/jsglr_layout/tests/haskell/Haskell.tbl
	jsglr-orig/test/org/spoofax/jsglr_orig/tests/haskell/Haskell.tbl
	test-hackage/.classpath
	test-hackage/src/org/spoofax/jsglr/tests/haskell/TestAllPackages.java
	test-hackage/src/org/spoofax/jsglr/tests/haskell/TestFile.java
	test-hackage/src/org/spoofax/jsglr/tests/haskell/TestPackage.java
	test-hackage/test-all.sh