Added a flag to enable the databinding functionality in the Viewlet Manager so that it can be used without databinding
Merge pull request #109 from hatched/toggle-viewlet-databinding

__To QA__
We just need to make sure that the databinding still works:
- deploy wordpress
- open the inspector to the configuration tab
- run ```var srv = app.db.services.item(0); var cfg = srv.getAttrs().config; cfg.debug = 'yes'; srv.set('config', cfg);```
- the "debug" option should now read yes