use custom images for relation icons
Added a flag to enable the databinding functionality in the Viewlet Manager so that it can be used without databinding
Merge pull request #108 from garyposter/rel-indicator

This simply hooks up relation icons per the design.  If you want to QA, turn on the feature flag (`http://localhost:8888/:flags:/relationCollections/`), make a relation, and verify that the green circle shows up.  The aggregatedStatus function is just a stub at this point, so it will only ever be green in this go-round.
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
Add in relation menu with ability to delete

Relations now provide a menu with all of the actual relations in the collection
available.  Clicking on the relation will bring up the delete dialog.

Proper positioning of the menu is not included in this branch, but rough
posititioning is.

Switching to quoted keys for window.flags

Lingering environment view assigned to global; adding template.

Responding to reviews; includes drive-by of destroying view in test_environment_view.js
Merge pull request #107 from makyo/relation-menu

Relations now provide a menu with all of the actual relations in the collection
available.  Clicking on the relation will bring up the delete dialog.

Proper positioning of the menu is not included in this branch, but rough
posititioning is.