Cleanup for deployment

* change Flask-Jasmine to be opt-in via settings.ENABLE_JASMINE
* add AUTOBUILD_ASSETS setting to make runtime asset compilation opt-in
* move VERSION/COMPANY settings to settings.default
Add patch for `webassets`

* patch makes filter lookup lazy to avoid trying to list directory
  packages.zip/webassets/filter (which fails, because it's a zip file)
Updates for App Engine deployment

* add libraries/skip_files/env_variables to app.yaml
* make asset directory and packages.zip specified with full paths
  compatible with AppEngine environment
More eager_query optimization

* add eager_query() to several more models and rearrange base classes to
  get correct MRO
* remove logging.basicConfig to avoid logging queries multiple times
Don't include categories/assertions in Control response

* eager_query doesn't work yet, and 400 queries is too many