We need to clean up the UI items on the toolbar and halos

[rickmcgeer]

The top bar items have been removed thanks to a suggestion from @merryman. The Halo items are also OK. We still need to do the menu items. Changed horizontal layout to tiling layout in TopBar. See:

$world.execCommand("open browser", {moduleName: "studio/top-bar.cp.js", packageName: "galyleo-dashboard", codeEntity: "GalyleoTopBar"});