Master/plc-connector: Reads data from PLCs of different vendors, processes it and saves it to different kinds of databases

jm-hsa 51f8668414 init		2 rokov pred
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common.py	51f8668414 init	2 rokov pred
correlated.py	51f8668414 init	2 rokov pred
measurement.py	51f8668414 init	2 rokov pred
plant.py	51f8668414 init	2 rokov pred