* 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
* add router service polyfill
* add refresh command
* move async code into ember-concurrency task and implement refresh that way
* use ember-concurrency derived state to show a loading spinner when the task is running
* scroll after appending to log too
* add creation path to the display on wrapping lookup
* fix z-index issue with console-panel and the subnav on smaller viewports
* use position:fixed for all of the global flash stuff
* tweaks for the console on mobile devices
* adding columnify and ember-cli-cjs-transform
* add yargs-parser
* remove vendored yargs-parser tokenizer and use cjs transform to import it from actual yargs-parser
* add clear command that clears the log, but maintains history
* make codemirror have no gutter and be auto-height when rendered in the console output log
* add fullscreen command and hook up fullscreen toggle button
* hook up copy button
