added info how to clone buildout.python submodule
pinned Pillow version
readded distribute version pinning, this prevents buildout from installing an outdated version.
downgraded Cheetah to resolve version conflicts
buildout.python: link bin/python2.7 instead of bin/python, this allows automatic python updateds with buildout.
cleanup paste installation
build.sh: temporarly set branch to feature-#241-buildout2
build.sh: removed virtualenv, compile python instead
build.sh: remove forcing buildout version, pinning in version.cfg should be enough