Removing the background app code, HTTP server, etc.
This code can always be revived from git, but is just confusing now.
Part one of moving wtf/app/ui/ out to wtf/app/.
No namespaces have been renamed yet - this only moves the files.
Renaming the wtf.app.ui namespace to wtf.app.
Removing the ExtensionChannel.
Merge pull request #378 from google/remove_app

Remove the Chrome packaged app code.