* 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
* use lazyCapabilities macro in models
* use expandAttributeMeta and fieldToAttrs everywhere
* add angle bracket component polyfill
* use PageHeader component throughout
* fix version service parsing of .hsm in a version string
* remove race condition where the replication menu would show the enterprise upsell in an enterprise binary
* fix styling and layout of replication status menu
* move version check to beforeModel
