Bump version to 6.1.14
Bump version to 6.1.14-dev
Get test suite passing under py.test; #558

This tweaks the imports in gittip.billing to use the old db object as
gittip.db instead of import db from gittip. Presumably due to the order
that the modules are imported under py.test, the db module is not
configured before the tests are called.
Merge branch 'master' of github.com:zetaweb/www.gittip.com