Cyclic preferences are no longer normalized fixing issue with cyclic plotting code

ATTENTION: This commit will break any custom analysis code, which
assumes cyclic preference values have been normalized between 0 and
1. Cyclic preferences are now stored unnormalized but are normalized
with the cyclic_range parameter before plotting. Make sure that if any
of your analysis code depends on the preference values being
normalized, that you do the normalization yourself by dividing the
preference values by the cyclic_range accessible on the sheet_view
object. Note the Corner_OR, Orientation_Preference and
Spatial_Frequency_Preference test data has been updated to reflect the
change.