Improved property viewers

Slot fill data included in library viewer
Breadcrumbs and children in lib view
breadcrumbs and children work on tree tab

app/imports/constants/PROPERTIES.js

@@ -214,7 +214,7 @@ const PROPERTIES = Object.freeze({
 export default PROPERTIES;
 
 export function getPropertyName(type) {
-  return type && PROPERTIES[type] && PROPERTIES[type].name;
+  return (type && PROPERTIES[type] && PROPERTIES[type].name) || type;
 }
 
 export function getPropertyIcon(type) {