Allow to handle 1st/2nd person pronouns with pronoun methods

[nonprofittechy]

Fix #870, updating the pronoun capability to match DA 1.4.103 and higher.

This allows making text in a template responsive to the number of people in a list, for words like "I" "we" "us" "our" "my"

Test interview:

---
include:
  - assembly_line.yml
---
mandatory: True
question: |
subquestion: |
  ${ users.pronoun(person=1) }
  
  ${ users.pronoun_subjective(person=1, capitalize=True) }
  
  ${ users.pronoun_possessive("elephant", person=1) }