As a registration admin, I would like user documentation for common admin procedures

[kitsuta]

As someone who has not used RAMS at my convention before, I would like how-to guides on some of the useful but not necessarily intuitive functions of the system that I'm likely to need.

These include:

• [x] The 'placeholder' badge system
• [ ] A brief overview of the Attendee details page (go through and explain what each field does or link to the related guide)
• [ ] What badge status are and what each one does
• [ ] The watchlist system
• [ ] How attendee-facing badge transfers work (so I can decide if I want them on or off)
• [ ] The Feed of Database Changes and Attendee history
• [ ] The CSV export/import function (low priority)
• [x] Dealer registration/approval workflow
• [ ] At-door badge purchase workflow (note: adapt this from MAGFest registration's docs)
• [ ] At-door badge check-in workflow (same as above)
• [ ] How approving emails work and what emails I may want to approve

[jmdawson]

@fursuit69 @SelenetheCorgi How much of this is missing from the wiki?