Architecture: Big refactor of Stax .py files
Now Stax has:
- classes_context.py -> Classes used by the context.
- ops_context.py -> Operators used by the context.
- utils_domain.py -> Utilitary functions used by several operators.
- draw_context.py -> OpenGL functions used by the context.
- ui_context.py -> UI elements (panel, menu, header...) used by the context.
A lot of dead code deleted.
Edited by Félix David