[Create] Expose type information

Expose type information in the metadata for Create
actions, to allow identification of appropriate Create
actions for WTD-922.

platform/commonUI/browse/src/creation/CreateAction.js

@@ -92,6 +92,7 @@ define(
                         key: 'create',
                         glyph: type.getGlyph(),
                         name: type.getName(),
+                        type: type.getKey(),
                         description: type.getDescription(),
                         context: context
                     };