Return to mock-metrics for now.

- Bring MoC under new linting rules
- adds support for immutable-console-renderer
- fixes up metrics actually displaying after bad fixes when rebasing.
- Mock all metrics client side for demoing

client/app/scripts/debug.js

@@ -0,0 +1,3 @@
+import Immutable from 'immutable';
+import installDevTools from 'immutable-devtools';
+installDevTools(Immutable);