XML Element is now implemented in sat_tmp, so it can be available also for SàT Pubsub.
The XEP-0315 is thus not needed anymore and have been removed, XEP-0315 namespace has been added to base disco features.
Use the new install() function of sat_tmp to do the patching.
- 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/
