Added some files to gui, and added image writing

I hastily added in writing the search query onto the image that you
download from the web. I just started using it less than an hour ago, so
there's probably better ways to do it. PIL ways I meant. There's also the
issue of PIL and other libs not being there by default so I'll need to add
checks for those too at some point so other people can use this easier.

Another thing is that I have a terrible thing write now, I save to
wallpaper and then use the returned wallpaper image path to resave and
reset the wallpaper, a pretty wasteful operation. Hopefully I can get that
sorted out, but it seems like it'll have to wait.

Done procrastinating.