removed docs from main repo
removed vendored version of wtforms
initial packaging preparation
removed hard dependency on raven (it can still easily be added as a vendored library)
remove hard dependency on babel and pytz
moved tests from inside package to repo top-level
removed explicit changelog
removed redundant step from travis config
nacelle has no dependencies (outside of the appengine sdk) so removed those sections from setup.py
disabled PIL in default tests and added explicit test deps