Add cmd k to navigate pages (#254)

* Begin styled command bar

* Add 2 commands and improve styling

* Add storybook

* Move z-index to variables and use hotkey hook

front/src/modules/ui/layout/styles/themes.ts

@@ -26,6 +26,8 @@ const commonTheme = {
   borderRadius: '4px',
 
   rightDrawerWidth: '300px',
+
+  lastLayerZIndex: 2147483647,
 };
 
 const lightThemeSpecific = {