[Improvement] Allow to input address:port in settings for 'real' remote debugging.

[Th3WalkingDad]

It's only possible to input a port in OWS settings panel.
The result is used for address parameter in remote debugging.
Since JRE9, only local adresses are accepted by default ( source )
So it's not possible to do 'real' remote debugging (from another machine), without forwarding TCP traffic on client machine.

Allowing to input address instead of port would solve this.

Maybe there are side effect I didn't think about... ?

(I have also post this on support forum https://board.karakun.com/viewtopic.php?f=21&t=47, as it may help...)

Thx

[sclassen]

fixed with #274