"Start upgrading" is still shown during upgrading all

[uwe_keim]

Maybe this is a regression of The “Start Upgrading” button does not disappear during upgrade.

When doing an “Upgrade all”, the Start Upgrading button is still shown.

I would expect that it gets disabled after pressing it.

[codinghorror (Jeff Atwood)]

Possible bug @Osama?

[Osama]

Good catch @uwe_keim

Fixed in:
https://github.com/discourse/docker_manager/pull/45