Consistent naming convention
We need to establish a consistent naming convention for our functions, classes and variable names.
We started to follow PEP8 and should move to this entirely.
This can also be checked with
pylint, we need to stop ignoring
invalid-name errors (only after fixing all of them though).
related to !513 (merged)
This involves rather big changes, also concerning the config files, we should do this in steps.
Here are some changes which require config adaptions, change
all the plot arguments need to be changed to the new API