Few changes in GUI color strings

[Pavel Sanda]

On Fri, Apr 14, 2023 at 11:51:35PM +0200, Pavel Sanda wrote:
> Hi,
> 
> there are few changes I'd propose for GUI color names as I got stuck several times while translating the current Zoo:
> 
> added text (output) 	-> changes - added text (exported output)
> deleted text (output) 	-> changes - deleted text (exported output)
> deleted text modifier (workarea) -> changes - deleted text brightness (workarea)
> 
>  - "changes" to group it with other CT items, strings like "added text (output)" are difficult to understand without context)
>  - "brightness" is not exactly what will happen with non-monochromatic colors, but at least it gives some idea, "modifier" just left me baffled until I read the code
> 
> non-unique inline completion -> inline completion (non-unique)
> 
>  - to group with inline completion
> 
> math -> math text
> 
> 
> Objections/modifications?

I commited the changes, feel free to modify my changes/the rest.
Pavel