Get manifest.json to a valid state.

- Enable any domain permissions.
  Ideally, this should be reconfigurable so only the domain option
  specified by the user is given access, but I haven't yet figured out
  how to accomplish this.
- Removed "omnibox.js" from the background loaded scripts, as it's not
  needed.
Add options.js for the options page.

This is just a first shot at finding a way to generate all the options
needed. This also reaches out to Chrome's storage sync API, although
no events are setup to actually save settings yet.
Add "storage" permissions access to manifest.
First shot at a configuration page.
Force strict mode.
Force strict mode.
Force strict mode, disable interval updates.

I have turned off interval updates for now since we still dont know
exactly how to query phabricator instances.