Karma test tweaks

* Make sure we only get one js-sdk (and update runtime config to match)
* Don't verifyNoOutstandingRequests (since it is hard to be certain which we
  will get, and makes the tests too dependent on implementation-specifics).
* Disable color for npm test, to avoid confusing Jenkins

webpack.config.js

@@ -42,6 +42,9 @@ module.exports = {
             // we tend to get the react source included twice when using npm link.
             react: path.resolve('./node_modules/react'),
 
+            // same goes for js-sdk
+            "matrix-js-sdk": path.resolve('./node_modules/matrix-js-sdk'),
+
             // matrix-js-sdk will use olm if it is available,
             // but does not explicitly depend on it. Pull it
             // in from node_modules if it's there.