This commit adds a test for the payload that is generated when
a Task is moved from one user story to another on Taiga's Sprint
Taskboard UI.
This commit also gets up this webhook's test coverage up to 100%.
This directory contains scripts that are used in building, managing,
testing, and other forms of work in a Zulip development environment.
Note that tools that are also useful in production belong in
scripts/ or should be Django management commands.