Toggle endpoints are subject to race conditions

[brassy-endomorph]

Is your feature request related to a problem? Please describe.

Users clicking a form button mutliple times may sent multiple requests that lead to undesired state where a boolean is twice flipped instead of twice idempotently set.

Describe the solution you'd like

Endpoints of the form:

entity.some_attr = not entity.some_attr
db.session.commit()

Should require a form to explicitly include if the field is being set to true or false to prevent multiple requests from undoing each other. The flashed message should also include the state the field is set to.