switched to UI-lib-agnostic enketo-core, added Zurb Foundation as UI library, tweaked KoBo theme, closes https://github.com/kobotoolbox/enketo-express/issues/62
updated README.md
upgraded packages
added back api/v1 support, support legacy api urls, redirect to API documentation (v1), closes https://github.com/kobotoolbox/enketo-express/issues/92 and closes https://github.com/kobotoolbox/enketo-express/issues/94
allow linked OpenRosa server to be an empty string, closes https://github.com/kobotoolbox/enketo-express/issues/91
bumped version