Refactor / idempotent-fy vagrant.sh
Refactor / idempotent-fy vagrant.sh

Big changes:
1) Update packages!
2) Remove uncessary X11 packages (wisely, before updating all the packages)
3) Install all packages at once
4) Leave package addition in same order, because, it looked interesting?
5) Look for symlink before making it (Vagrant errors out on second
   provision otherwise)
6) Build demboyz

SizzlingStats/demboyz,SizzlingStats/demboyz,SizzlingStats/demboyz