class_map was so far used as a global value, but in some cases, several XMLUI managers may be used (it's the case in Cagou's remote controllers plugins, template_xmlui is used to manage remotes).
This patch set class_map as a create argument, this way it can be set with partial, and several XMLUI managers can be instanced at the same time.
- moved directories from src and frontends/src to sat and sat_frontends, which is the recommanded naming convention
- move twisted directory to root
- removed all hacks from setup.py, and added missing dependencies, it is now clean
- use https URL for website in setup.py
- removed "Environment :: X11 Applications :: GTK", as wix is deprecated and removed
- renamed sat.sh to sat and fixed its installation
- added python_requires to specify Python version needed
- replaced glib2reactor which use deprecated code by gtk3reactor
sat can now be installed directly from virtualenv without using --system-site-packages anymore \o/
