More cleanup

- operator strings are referenced via the class property rather than a hard coded string
- class names have been cleaned to have _OT_ or _PT_ depending on the kind of class it was.
- Class names should mostly be CamelCase now.

core/export_resonite.py

@@ -9,7 +9,7 @@ from ..functions.translations import t
 
 
 @register_wrap
-class ExportResonite(Operator):
+class AvatarToolKit_OT_ExportResonite(Operator):
     bl_idname = 'avatar_toolkit.export_resonite'
     bl_label = t("Importer.export_resonite.label")
     bl_description = t("Importer.export_resonite.desc")