scrap settings dialog is too narrow to accommodate typical 'other settings' strings

[CaverBruce]

Related to #7

The scrap settings dialog is too narrow to accommodate typical 'other settings' strings. Also it should allow both date and name for author and copyright.

(This is the string in the 'Other settings box) undefined -station-names []@3
As well as station-names, there is sometimes 'flip-horizontal'.

Similarly the scrap panel is sometimes too narrow. This example shows it is OK, but sometimes I have longer scrap names, and the differentiating characters are obscured on the right.

[daem-on]

I changed the other settings box completely, now it's a textarea allowing for multiple lines.
This was something I wanted to do anyway, because XTherion does this for some settings.

The scrap panel is a bit tougher, because it can't dynamically adjust based on the text length, so the only solution is to make the scrap panel width adjustable. Or to have shorter scrap names.