Add modifications to JSON UI and refactor a bit (#198)

- Added modifications to JSON UI
- Moved grouped-ui definition to grouped-ui.json file
- Added all animation types to anim_type

source/resource/ui/elements/properties/bindings.json

@@ -1,4 +1,5 @@
 {
+  "$schema": "http://json-schema.org/draft-07/schema",
   "title": "Bindings",
   "description": "The bindings that are contained within this element.",
   "anyOf": [