Add comment about separation of toolbar code from toolbar action code in Leaflet.draw implementation.
Add CSS for secondary action popout bar for L.Toolbar.Control.
Begin moving toolbar HTML generation code out of L.Toolbar.js and into L.ToolbarAction.js. Major refactoring.
Refactor tests to accommodate changes to L.Toolbar and L.ToolbarAction.
Add tests for factory functions L.toolbar and L.toolbarAction.