Update control scripts for WACL CO2 experiment

Update various names to match WACL CO2 experiment - a lot of this stuff
should really be abstracted into a configuration file. That will be
straightforward to do when I have time.

A minor update is the inclusion of timestamps in the control log, which
should make remotely debugging issues more straightforward.
# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# On branch co2_experiment
# Changes to be committed:
#	modified:   control.py
#	modified:   data_reader.py
#	modified:   data_writer.py
#	modified:   plotting.py
#	modified:   run_control.sh
#	modified:   run_upload.sh
#	modified:   udev/10-local.rules
#
