frex / fullscreenizer

This is my personal modified version of Fullscreenizer by Runtime Terror.

As explained on that website, the original project doesn't take in patches, but welcomes people to fork the project so I did.

Changes I've made based on my own personal usage are:

1. fullscreenize the window on the monitor it's currenlty on, not on the primary one.
2. auto-refresh the window list every 500 milliseconds.
3. persist the chosen list box item between refreshes.
4. disable the "Fullscreenize" button when there is no window selected instead of showing a modal pop up message.
5. do not show Fullscreenizer's own window in the window list since I never want to fullscreenize them.
6. remove the "Toplevel windows:" label and the "Refresh" button.
7. remove the "Help" button since I find it pointless since in a single purpose program.
8. make the "Fullscreenize" button full width of the window since other two buttons ("Help" and "Refresh") were removed.
9. reduce the borders around the list box a bit.