* Add basic support for new K7 navigation
* Make visibility and app title work
* Allow nav controls on right side of navbar
* Use render callback w/ el
* Add support for multiple sides
* Remove fake spaces nav control
* Breadcrumb support
* Hide breadcrumbs in plugins when k7design is enabled:
* Fix units
* Rename k7 -> header
* Add tests
* Fix tests
* Fix loading indicator
* PR comments
* Move ts-ignore
* Use canvasApp icon type
This was previously defined in uiExports.app, which limited plugins which are not an app of providing a stylesheet. This allows any plugin to define a stylesheet which will be available on page load.
