* feat(toolbox) allow any toolbox button to be displayed as main
fixes the previous behaviour where only a certain set of buttons were whitelisted for being displayed in the main toolbar
* code review
* code review - fix avatar icon position
* feat(keyboard-shortcuts): show help in a react dialog
- Move shortcut help dom declaration to a react component
- Let open/close logic be handled by AtlasKit Dialog
- Remove static html for help from index.html
- Consolidate keyboard shortcut css
* squash: use lozenge for key styling
* squash: use different iteration style
* squash: update package-lock for lozenge