Add ci-translation-check part

[Gomez]

For the CI Server:

[ci-translation-check]
recipe = collective.recipe.template
mode = 775
input = inline:
    #!/bin/bash
    ./bin/i18nize-webapp
    test_webapp=$(/usr/bin/msggrep -v -T -e "." src/starzel.theme/src/starzel/theme/locales/de/LC_MESSAGES/starzel.theme.po)
    if [[ $test_webapp ]]; then
        echo "Missing translations in starzel.theme.po"
        exit 1
    fi
output = ${buildout:bin-directory}/ci-translation-check