install: add sub prototypes to scriptscript
add script to turn off firefox fullscreen
install: explicitly use identity fct
install: add runUser util to run as the super_user
install: pull isRoot() from getRoot()
install: only re-run as su $USER if user is root
install[haskell]: getRoot and run cabal as user
install[haskell]: append xmonad-nonreparenting fix to /etc/environment