Feature Request: Password protect pushes

[pglombardo]

Incoming feature request from a few sources in the past. Most recent from yesteday.

This would include the ability to set a password for a push being that the push wouldn't be visible until the right password is given.

Unknown: Unlimited tries or lock push after a certain failed attempts?

The URL is secret to random brute forcing is unlikely...

[dmuhs]

👍🏼 Merged with the other changes and good to go!