Updated Closure Compiler to 20131118 (#12871)

The jar is now split into two in GWT tools (compiler + sourcemap) and
the extra files are removed

Change-Id: I8838459a61e5a7a4b7d9cdb110a2243a02dc245d
Update HTMLUnit 2.9 -> 2.13 (#12871)

Change-Id: Ia90094d6f13beaf56b9ed8759fc451c138fe95aa