KatRun.plot now accepts xscale, y1scale, and y2scale. These should be an SI scaling from the pykat.SI dictionary. e.g. `xscale='milli'`

Hopefully fixing bug reported in `pykat.optics.maps.rmZernike` where `m='all'` was not being processed correctly. Problems with if statements not handling all cases and leading to undefined variables along with type checking issues.