there is no need to have 2 plugins doing the same
moreover FindProc does no longer work with recent Windows 10 versions, so it must be removed anyway
- configure.nsh: small code optimization
- Settings.nsh: update year
- fix bug that registry uninstaller settings of the previous version are not replaced when installing new version of the same series
- avoid explicit calls of the name "FreeCAD"
- update example code and description to MSVC 2017 and FreeCAD 0.19git
