Check help links
Since we have re-worked quite a few screens, our help pages in the Wiki
are largely out of date.
We need to go through each page of the GUI, and try every help "(?)" link,
and make sure there is a page there that says something hopefully useful.
If there is a page that needs major work, make updating it a sub-task of this
ticket, and we can assign it separately. If it just needs a word or two
changed, just fix it.