ACP: Make variable width

[crabpaws]

For example: ACP > Forums > Manage Forums > Category and Forum Overview

The forum list appears to be in a table column with fixed width. If you're like me, with lots of windows open at once, you may not have maximized your browser window. This necessitates horizontal scrolling to get to the checkbox or all-important little circular button on the right.

There's no reason for all that empty horizontal space between the forum

Please make this and similar areas variable width. It will reduce scrolling and RSI.

Thanks.