This makes manipulator access closer to operators, and allows Python access. This adds RNA for manipulators, but not Python registration yet. - Split draw style into 2x settings: `draw_style` (enum) & `draw_options` (enum-flag) - Rename wmManipulator.properties -> properties_edit, Use wmManipulator.properties for ID-properties. Note that this area of the API will need further work since manipulators now have 2 kinds of properties & API's to access them.