Story 55108388: inner nav now shows spinner when widget triggers 'loading', removed when widget triggers 'loaded'
Merge remote-tracking branch 'origin/develop' into feature/admin-spinners

Conflicts:
	src/ggrc/assets/javascripts/controllers/dashboard_controller.js
Merge pull request #208 from reciprocity/feature/admin-spinners

Generalized spinners in inner nav.