Simplify "Houston we have a problem..." error popup

[bnvk]

I'm not sure if all the messages that show up in the modal with the title "Houston we have a problem" but the current one I experienced is just VM already stopped in this modal there is significant bit of uneeded / overwhelming text

I prefer more simplified text like:

Title: Houston we have a problem

Main Message: VM Already Stopped Running!

Detail Message: This is most likely a bug in Qubes Manager

Reasoning for this is: the main message is really what this is about. Currently a user has read a title + a whole sentence, then know how to mentally parse out the cryptic QubesException: preface, to read what the message is really about VM Already stopped! and the details of that message are already in the "Show Details" expand window.

I'd be happy to edit the file where this exists myself and submit a pull req if someone can point me to where it is :)

[marmarek]

It's here:
https://github.com/QubesOS/qubes-manager/blob/master/qubesmanager/main.py#L1982-L2016

[marmarek]

It's here:
https://github.com/QubesOS/qubes-manager/blob/master/qubesmanager/main.py#L1982-L2016