config.json configuration data is no longer in the codebase

Removed the karma configuration parameter that was serving up the (now non-existent) config.json file.

https://github.com/askcom/quarry-webui/issues/2
yay, karma is now serving images

Success, no 404s:

LOG: DEBUG
 'DEBUG: -------------------------------'LOG: DEBUG
 'DEBUG: Ember      : 1.4.0'LOG: DEBUG
 'DEBUG: Handlebars : 1.0.0'LOG: DEBUG
 'DEBUG: jQuery     : 2.0.3'LOG: DEBUG
 'DEBUG: -------------------------------'..................
upgraded to Ember.js 1.4.0

1.4.0 includes the following deprecation message:

DEPRECATION: Using a quoteless parameter with {{render}} is deprecated. Please update to quoted usage '{{render "navbar"}}.

I've obliged, updating this non-quoted usage of the {{render}} helper. (It was the only such usage.)

https://github.com/askcom/quarry-webui/issues/1
Merge branch 'refs/heads/bugfix/karma_config_json' into develop
Merge branch 'refs/heads/bugfix/karma_images_warning' into develop