TrafficControl: Bind Python into Program, or Port Scripts to Code?

Currently my program expects the user to have python installed on his/her computer. This will be a severe blocker for any portability and I will need to handle this, either by binding Python into C++ or porting the scripts into C++ code. 

Binding:

Advantages: I would be able to use the existing code

Disadvantages: The binaries may be bigger and that will be a disadvantage when deploying on web assembly

Porting:

Advantages with porting to C++: Everything will be in C++

Disadvantage: Porting the application to C++ may be time consuming.

For now, I'll try porting the code to C++/Qt/Regular expressions.

Legacy Code:

The program creates a shell process that starts python.exe (hard coded for Windows), with a hard coded path to the script. 

In my last commit, I added code to src/networkDesigner.cpp. For the XML/QML handling, I used some code that I found at stack overflow.

This change isn't visible but it is a big step towards Web Assembly.