[Bug Report] 'Unknown Ethnicity' Error When Scraping for Performer Info

[baronohm]

Bug
'Unknown Ethnicity' Error thrown when I scrape for a performer whose ethnicity isn't white, black, hispanic, or asian on freeones.

WithoutPants has said that the schema is free text so it'd be great if the fix could be giving us free text in the UI rather than a menu. Would both fix bug and allow us to add performers who are native american, middle eastern, or have some other ethnicity that doesn't fit the current four choices.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Performers'
2. Click on 'New'
3. Click on 'Scrape with...'
4. Click on 'Freeones'
5. Add performer with ethnicity on Freeones that isn't 'white, asian, black, hispanic'.
   (i.e. 'Nazia Siddiqi')
6. Click on 'Scrape'

Expected behavior
'unknown.ethnicity' error will appear at top. Stash won't save the information of the performer you just searched.

Desktop (please complete the following information):

• OS: Windows 10 Home
• Browser chrome
• Browser Version 80.0.3987.100 (Official Build) (64-bit)
• Stash Version v0.0.0-alpha_dev-5-gc99ba68