Automatically update dropdown condition formulas on Ref, RefList, Choice and ChoiceList columns when a column referred to has been renamed.
Also fixed column references in ACL formulas using the "$" notation not being properly renamed.
Summary:
Dropdown conditions let you specify a predicate formula that's used to filter
choices and references in their respective autocomplete dropdown menus.
Test Plan: Python and browser tests (WIP).
Reviewers: jarek, paulfitz
Reviewed By: jarek
Subscribers: dsagal, paulfitz
Differential Revision: https://phab.getgrist.com/D4235
