Implement automated sorting of some lists on links

[claremacrae]

This is written up in: Sorting of lists, to aid readability

[claremacrae]

This is a comment I wrote to sort links in one file:

sort  -t '|' +1 Uncategorized\ plugins.md | grep '|' | grep -v 'Edit In GitHub' | pbcopy

The pbcopy command puts the output on the Mac clipboard

[claremacrae]

One way for this to work in many places would be for update_releases.py to sort the plugins and themes by their name, before processing them.

Then, lots of lists would just come out in alphabetical order.

The main remaining area would be lists in plugin and theme categories.

[claremacrae]

All that remains is to update the page in the hub to say this is done.