Provide option to center window when profile window style is set to "Top of Screen"

Currently, when the profile window style is set to "Top of Screen", the window is displayed at the columns value for width, left-aligned. It would be nice if there was an option to center that window instead of having it left-aligned.

This behavior is similar to TotalTerminal.

mentioned in issue #4007 (closed)

Milestone changed to Feature Complete 3.1

Added Priority: High label

Status changed to closed

Dup of #3867 (closed)