Allow to set the width and height as percentages

[Nowaker]

Yakuake from Linux allows you to set the width and height as a percentage of screen width and height. This is more user friendly as it's easier to comprehend, plus a default value of 80% or 100% makes the program "just work" on any screen, without a need to configure anything beforehand. Also, if this is implemented, I suggest making the "centered" alignment the default choice.

[joedf]

Good idea, thanks. I'll aim to include this in the next release. 👍