Gladius

Changed:
- Custom aiphttp Application init args

Fixed:
- Only scripts should be imported, not links, in case of Brython

Fixed:
- Added support for import PyScript modules in server-side

Added:
- Reload server-side Python app if client-side Python file gets changed. This method uses `gunicorn`.
- Directly import client-side Python modules in server-side. This method uses `mock_module.py`.

Fixed:
- Brython, check for `javascript` module.

Added:
- Support for Brython
- More Brython demos

Removed:
- Support for watchdog