[texworks] Make PDF viewer remember its previous display settings (fwd)

[Marko Käning]

Hi,

I'm happy that texworks is available on so many platforms. This is the 
first time that I have the same environment under Linux/Windows/MacOSX! :)

I'll try to help improving it whenever I see something.

What I noticed for instance is that the integrated PDF viewer never 
remembers in which display mode it was before TW was closed previously. It 
would be really nice if it would remember that I want to see the whole 
page, or whatever I had selected previously.

Nice job!

Good luck,
Marko