Added console.group/groupEnd around requires. Allows collapsing groups of 404s.

As a nice side effect, it also shows the dependency tree as things load.

Everything expanded
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![selection_122](https://f.cloud.github.com/assets/324999/1242638/c68bc570-2a4a-11e3-801b-9fc03b27630d.png)

Same page collapsed
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![selection_123](https://f.cloud.github.com/assets/324999/1242639/cc6d2b28-2a4a-11e3-8a6a-e7a3811b16d7.png)