Better namespacing for identifiers.

- Removes randomized modular identifiers.

Commit breaks as the tests need to be adjusted to handling the new
format:

    window['path/to/module']
Fix tests

Update the `compare-ast` module to use fuzzy string comparisons.
Throw error on unrecognized module names
Merge pull request #12 from jugglinmike/better-namespacing

Better namespacing for identifiers.