Recode trait / trait_value

[dfalster]

We want a function to recode either

• a trait_name
• (for categorical traits) a trait value

The function would scan across the likely places and update accordingly.

For trait name

• change name in definitions
• change name in metadata in traits -> trait_name (see pic)
• change name in any substitutions

For trait value

• change value in definitions
• review entire compilation and located records with old_value
• for each study with values
  • check custom R code for old_value
  • check for existing substitutions to old_value and change to new_value
  • recompile, if any remaining instances of old_value, add a substitution from old_value to new_value