Created dashboard services

- `/apigility/api/dashboard`:
  - authentication
  - DB adapters
  - modules (with REST and RPC service names)
- `/apigility/api/settings-dashboard`:
  - authentication
  - content negotiation
  - DB adapters
Began integration of settings-dashboard service

- Displaying authentication information
Completed settings-dashboard

- Added content-negotiation and database adapter panels, linking to individual
  resources.
- Updated all icons to use <i> instead of <span>
Fixed typo in adapter panel title
Initial "home" dashboard

- Display list of APIs, authentication details, database adapters
- Updated "default" page and home breadcrumb to go to dashboard
Added REST/RPC service listing to dashboard

- Displays lists of each type of service, linking directly to each.
- If no services defined for a given service, display a message asking if they
  want to create one, and linking to the page showing that service type for the
  given API.
Use ui-router resolvers for dashboards

- Presents flash of content when loading page.
Rebuilt UI distribution
Ensure images are copied into dist
Merge branch 'feature/dashboard'

Close #157

Implements application and settings dashboards.