#63 Support of Comma (,) and Point (.) symbols for decimal numbers

[GHPS]

At first glance this seems to be a good idea: Support for
different number formats would make MathMod more user-friendly and thus
open it to a wider, international audience.

Supprisingly MathMod already comes with this feature: The QT library
supports - by default - different number formats (and various
other language settings) and as a QT applications MathMod inherits
all the necessary application libraries.

Unfortunately there has been a bug in the way MathMod uses QT for
quite a while now.[1] This bug makes it impossible to use MathMod
on a machine with a different default
number format (e.g. German). Only recently I've found a hotfix
to patch this problem.

So the point is: Correcting this old bug would also grant MathMod
with the support of international number formats since all
the rest is already provided by QT.

1: https://sourceforge.net/p/mathmod/tickets/52/