#472 allow preview of script files

[mushis]

This issue is regarding the menu options/config/load script screen.
This area has been like this for a loong time, and there's clearly room for improvement.
Other than the cfg's themselves (need to be updated), there could be a "view config" option, which would display (in fullscreen) the contents of that .cfg file. I think this simple feature would make the load script feature alot more "usable".
The next step is to update the configs, i can update some, but i'm no expert. But im sure plenty of ppl would gladly contribute.
But the ability to view the file before loading it is crucial.