added testing buildout
specify Python and Plone version in setup.py
switch to plone.app.testing
remove unused imports reported by frosted
fixed tests with plone.app.testing
removed test-suites. tests are collected by testrunner anyway
document changes
automatic pep8ify cleanups
Merge pull request #6 from plone/tomgross-ptc

Ported tests to plone.app.testing