Analysis windows should be grouped by script on the task bar

[philipstarkey]

Original report (archived issue) by Philip Starkey (Bitbucket: pstarkey, GitHub: philipstarkey).

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Currently, all analysis windows are grouped together under one entry on the task bar. When you have lots of windows, it gets difficult to find the right window!

If there was a new entry on the task bar for each analysis script, this would make it easier to find the right window.

[philipstarkey]

Original comment by Chris Billington (Bitbucket: cbillington, GitHub: chrisjbillington).

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This should be easy, we already make the relevant calls to the Windows API telling it how to group other windows, so we just need to add that in for the analysis subprocesses. I'll do it in the Qt port.