Plant identification and species selection improvements

[mattrabe]

This ticket supersedes #161 and #179

Users should be able to:

1. Take a photo and have it be saved to the plant, or not take a photo.
2. Be told if no plant identification match is found.
3. Be shown a list of species found by plant identification and select the correct one.
   1. This should include multiple common names (available from Pl@ntNet but not Trefle).
   2. This should include multiple images, large enough to see on a phone screen (available from Pl@ntNet but not Trefle).
4. Be able to enter a species name for autosuggest, or not.
5. Be told if no species matches were found.
6. Be able to enter their own species name (submit this to Pl@ntNet and/or Trefle if possible) if they don't like the species autosuggestions, or leave species blank.