Merge pull request +6840 from c9/fix/mocha-test-rewrite

Rewriting tests to use mocha instead of asyncjs

package.json

@@ -60,7 +60,7 @@
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         "c9.ide.language.javascript.infer": "#ebb2daf81a",
         "c9.ide.language.jsonalyzer": "#efa4426f1f",
-        "c9.ide.collab": "#12f18e8225",
+        "c9.ide.collab": "#bdec08b794",
         "c9.ide.local": "#2bfd7ff051",
         "c9.ide.find": "#9fc6f4cfa5",
         "c9.ide.find.infiles": "#1b83cf12f1",