* add routes for control groups in tools, settings, access (#4718)
* UI control group - storage, request, authorization, and unwrapping (#4899)
* UI control groups config (#4927)
* add NavHeader component
* use NavHeader in SplashPage component and application.hbs
* let download button take a block
* add RadialProgress component
* use RadialProgress in ShamirFlow component
* style up the RadialProgress component
* update ember-basic-dropdown, ember-basic-dropdown-hover
* rework operation token generation workflow
* directly depend on ember-maybe-in-element
