[python console] Add support for using colors in the python console

[Vasco-jofra]

It would be cool if the python console (and log window) supported colors. The simplest solution would be using ansi color codes I think.

Right now stdout prints in white and stderr in red so the base support for colors should be there.

[plafosse]

We will implement this by putting the output into a terminal emulator. So this is technically a dupe of #30

[psifertex]

We are tracking the log improvement/changes via #2508, this bug is being updated to just track the python console and being re-opened.