Clean and uniform parameter read-ins from ResourceFiles

[tbhallett]

Currently we have the slightly messy situation with the parameter read-in from the Resource Files:

• Some parameters are given in a nice clean parameters.csv-type file: This makes it easy to include the labels and prior min/max values.
• Other parameters are read in from separate worksheets / csv file: where there is no easy way to add the labels and prior min/max values.
• Some ResourceFiles don't include parameter at all, but include data that is used in calibration.

It would be nice if we we could rationalise this so that for each module there is ONE file parameters.csv that does adhere to the conventions estalished in Module.load_parameters_from_dataframe() and which includes all the values, labels etc in one place.

In fact, once we load the parameters and metadata in the simulation, we could write such a file ourselves. (Similar to how we make this page using this function).