- add cloth button wasnt working because it was set to execute the operator.

- for adding an operator, start with a blank name and dont write the default one. (still writes each name you type in, will need to fix this properly)
- move the AddPresetBase class into presets.py since all the presets are defined there.

release/scripts/ui/properties_physics_cloth.py

@@ -78,6 +78,8 @@ class PHYSICS_PT_cloth(PhysicButtonsPanel):
             if wide_ui:
                 split.column()
 
+        split.operator_context = 'INVOKE_DEFAULT'
+
         if md:
             cloth = md.settings