363 find a way to add images to delivery sign up

[mveytsman]

Describe your changes

Closes #363

Add images to programs

Update for dispatchers:

Hey folks, as requested you can now add photos to programs so we can show riders what the deliveries look like. I've gone ahead and updated the photos from the spreadsheet for

TODO:
- [ ] I think a generic description or notes would be good here. I think we have something in the db we should just expose it #392

• Bug where when I delete a photo and upload a new one the deleted photo sticks around
• Tests

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added tests.
• Are there other PRs or Issues that I should link to here?
• Will this be part of a product update? If yes, please write one phrase
  about this update in the description above.

[teesloane]

Looking good so far! Maybe let's add a small header above the photos on the campaign signup to say "Photos campaign delivery" or something better than that.

[mveytsman]

Good idea!

[teesloane]

Good idea!

I think I'd change "Campaign photos" to something a bit more descriptive:

Delivery examples

{Program name} usually delivers {Enum.join(program.items)}

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Other than that, tested and good to go.

[mveytsman]

I don't think they're always delivery examples though, eg sometimes they me be maps

May I'll leave it as photos of the delivery but not do the "usually delives" bit?

Also see #392

[mveytsman]

I realized #392 was already done, but I added a little photo description field to follow the spreadsheet example: