Editorial documentation

FYI editors, I’ve added some instructions for routine Taiga operations to our technical documentation. Most/all of us already know this, but the next new editor may appreciate it. If you see anything unclear, wrong, or missing, feel free to make your own edits or let me know.

I just pushed the changes to the repo, so they should show up on the next hourly docs site build.

This is awesome, thanks Ben!

Hi Ben, I looked at it last night and it looks good to me. Thanks for setting that down for reference.

Added some info about WordPress operations (not including the theme, which is already documented)