Merge pull request #16 from igorko/master

SDL_WINDOW_RESIZABLE means resizable with mouse. This will break window
Fix bug where the last menus/menus.txt definition was ignored
Merge pull request #995 from dorkster/fixes

Fix bug where the last menus/menus.txt definition was ignored
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/dorkster/flare-engine-next into books