restructuring towards python client library #455 (#613)

* python client library clean branch for PR. #455

* removed superfluous file. #455

* removed one more superfluous file. #455

* README.md, .pylintrc and pylint based fixes. #455

* updated wrt. to the review comments. #455

* removed pylint documentation duplication. #455

python/web/start.sh

@@ -104,6 +104,8 @@ while [ "$1" != "" ]; do
     shift
 done
 
+PYTHON_COMMON_PATH=$(dirname $PWD)/common/src
 echo "Starting web server for RaSCSI Web Interface..."
+export PYTHONPATH=$PWD/src:${PYTHON_COMMON_PATH}
 cd src
 python3 web.py ${PORT} ${PASSWORD}