Refactor get_list_datatype

Summary

refactoring for caosdb-advanced-user-tools!80 (merged)

Focus

Added strict mode to get_list_datatype

Test Environment

unittest (extended)

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unittests/docker/Dockerfile

@@ -10,6 +10,6 @@ RUN apt-get update && \
       python3-sphinx
 ARG COMMIT="dev"
 # TODO Rename to linkahead
-RUN git clone -b dev https://gitlab.indiscale.com/caosdb/src/linkahead-pylib.git linkahead-pylib && \
+RUN git clone -b dev https://gitlab.indiscale.com/caosdb/src/caosdb-pylib.git linkahead-pylib && \
     cd linkahead-pylib && git checkout $COMMIT && pip3 install .
 RUN pip3 install recommonmark sphinx-rtd-theme