Epic: photos workflow overhaul.

[Br3nda]

Copied from #1783

• [ ] ~~. If the photo is CC licensed, we make a medium resolution copy on s3 at the time of model record creation.~~
• [ ] #465
• [ ] #1949
• [x] We start supporting other photo services that have copyleft licenses OR users can relicence.
• [ ] #513
• [x] #1378
• [ ] The user can be given a list of plantings to photograph one by one.
• [ ] They can upload several an associate with plantings in one go. (reducing the back and forth it has now.)
• [ ] We prompt users somewhere to take photos periodically
• [ ] We associate photos with a life stage of a plant, based in dates. Eg seedlings versus harvesting plantings.

[CloCkWeRX]

#2167 acheives the copyleft implementation.