fix adding sentences by switching back to UTF-8
Merge pull request #52 from HackerPartie/neu_model_refactor

fix adding sentences by switching back to UTF-8
add pageContext.request.getContextPath to URI in views so that the application workds outside the ROOT Context path
add UTF-8 filter to web.xml to make post requests work in UTF-8
fail on missing web.xml by default
add specific jetty-boulevard-web.xml for jetty