Create /software/qupath page

[ctrueden]

And add QuPath to publication template, and on the page's Publication section, explicitly ask people to not cite the recent bogus paper.

[ctrueden]

@MichaelSNelson Is this an issue you'd be willing try tackling?

[ctrueden]

@MichaelSNelson I pushed an initial stub for the QuPath page, added the publication, and so on. But please feel free to flesh it out with more details as you see fit. CC @petebankhead