Myokit

- Removed last traces of previous GUI.
- Fixes to output capturing so that it works on Windows.
- Various small bugfixes.

- New IDE seems stable.
- Added monkey patch for `os.popen` issue on windows.

- Completely new GUI in QT instead of WX, should solve mac problems, improve performance throughout.
- Integrated GDE with Myokit classes.
- Updated docs for command line tools.
- Dropping idea of supporting `msvc9` compiler on windows. Too many issues.
- Various small bugfixes.

- Bugfix in settings.py

- GDE is now a part of Myokit.
- Added "monkey patch" for old windows compilers.
- Some changes for C89 compatibility.

- SI units named after people are now also accepted when capitalized.
Never used for output in this fashion.