Update qtconsoleapp.py

[183amir]

Fixes #11
I did a quick test on my machine and it seems to work.

[Carreau]

Hum, with the renaming to Jupyter, I'm not sure IPython a the right choice :-)

[takluyver]

I think we need to work out what's going on a bit better:

• On my machine, I already see an application title in GNOME shell, without this change. Though it differs depending on if I start it from the command line or from a launcher. Which way are you starting it?
• The guide you posted said that the name needs to match the name of a .desktop file. That will probably be ipython-qtconsole or ipython3-qtconsole.
• @ccordoba12 reckons there's a similar issue on KDE; it would be good to know if that's the same or something else.

[ccordoba12]

This is the issue reported in our side about our lack of WM_CLASS: spyder-ide/spyder#2207.

According to the OP (a KDE developer), it was causing Spyder to be grouped with the wrong app in Plasma's taskbar. So there are other side effects besides the one reported on issue #11.

[takluyver]

OK, so it looks like we should be calling self.app.setApplicationName() as well. The GNOME docs also say that the name should match the filename of the .desktop file, minus .desktop, which will be jupyter-qtconsole by the next release, I guess. I'm going to whistle up another PR with the changes I think are necessary.

[takluyver]

See #16