UI Add scrollbars for webkit on Update Plugins

[garrett-eclipse]

Hello,

I've found with the Update Plugins iframe it often completes almost silently and it appears almost stuck as at first glance there's no indication there's more hidden in the fold of the iframe.

For instance my recent update left the last visible line as 'Disabling Maintenance mode...' but then it seemed to go silent and even though lines were written below they were hidden from view. This made me sit thinking I'd have to go remove the .maintenance file.
*Screen to come.

I'm on chrome webkit and would assume safari would be the same. It would be nice to override the browser and force the scrollbar to be visible. I often find the scrollbar almost acts as a progress meter as it gets smaller the longer the content gets so having it visible would be nice.

I hope that makes sense, just wanting to improve the cognitive feedback on the iframe to avoid leaving the user assuming the execution has suddenly stopped.

Thank you

[garrett-eclipse]

iframe hiding the completion of upgrade

[garrett-eclipse]

What was hidden behind the fold of the iframe