zoom buttons and other fixes

Hi,
I added zoom in/out buttons, because using the scroll wheel to zoom sometimes bugged out for me, probably because of my laptop's touchpad. This also enables a much closer zoom level, and I added some additional resolutions so that the mouse wheel can zoom in further as well. No images though, so brutile sprouts a bunch of exceptions when zoomed in closely.


I also moved the scroll viewer to a smarter position, just around the treeview, and not around the buttons. The reload button moved to just under the load button, since they are similar in nature, and is only visible if a save file has already been loaded.

Anyway, feel free to grab any of these changes if you like them - or discard them if they are crap. : )

Thanks for making a very useful tool, it has definately made me play a lot more JC2 than I would have otherwise.