adapt eslint_worker to new error messages

package.json

@@ -63,7 +63,7 @@
         "c9.ide.language.html.diff": "#24f3608d26",
         "c9.ide.language.javascript": "#c6d102471f",
         "c9.ide.language.javascript.immediate": "#c8b1e5767a",
-        "c9.ide.language.javascript.eslint": "#562fa7b097",
+        "c9.ide.language.javascript.eslint": "#9495ab1934",
         "c9.ide.language.javascript.tern": "#bf1072b11a",
         "c9.ide.language.javascript.infer": "#0561c69d67",
         "c9.ide.language.jsonalyzer": "#bf12af3d0a",