R1:c428f60a97f2

Partially modularize AlmanacService transactions

Summary:
Ref T13120. Ref T12414. See PHI145. See PHI473. This partially modernizes AlmanacService transactions by moving them to ModularTransactions.

This isn't complete because the "update property" and "remove property" transactions aren't modularized. They still //work//, since the parent Editor implements them, but they no longer render properly on the timeline since the `Transaction` object no longer has rendering logic for them.

Tentatively, I'm…