Reorganize nlp pipeline and add nlp-unsupported language italian

Improves and reorganizes how nlp pipelines are setup. Now users can
choose from many options, depending on their hardware and usage
scenario.

This is the base to use more languages without depending on what
stanford-nlp supports. Support then is involves to text extraction and
simple regex-ner processing.

docker/joex-base.dockerfile

@@ -15,6 +15,7 @@ RUN apk add --no-cache openjdk11-jre \
     tesseract-ocr \
     tesseract-ocr-data-deu \
     tesseract-ocr-data-fra \
+    tesseract-ocr-data-ita \
     unpaper \
     wkhtmltopdf \
     libreoffice \