Forget what I said about working
My boss is out and I do not have deadlines so... here it is a new release of my port!

Release #4 adds a few more buttons to the toolbar (Go to first page, go to last page and zoom buttons) and binds the Escape button to the Undo action.
I've also fixed a few small bugs in the code as well (just 2, but now I don't get any GTK Critical log on the console anymore).

Unfortunately the program still crashes after a minute or so (but doesn't if you don't use it.. gotta check this out now..or tomorrow.. yeah...)

Go update it.
See you.