GPII-103: Removal of 'datatype' from settings to options

Should be reviewed with: https://github.com/GPII/windows/pull/46

* Removes "datatype" entries from NP sets to be specified in the options block of a solutions entry
* Cleanup of the transformations in relation to the above, including changing the windows cursor entries to use the quantise transformation as opposed to the previous nested condition/op combo

We discussed the contents of roger.json at the weekly GPII architecture meeting today. It looks clear to me and others that the "cursorSize" value is incorrect with respect to how we've defined the common term. We should go ahead and change the "extralarge" value to a suitable float value instead.

@amb26, if you can verify that this change tests out okay, you're free to go ahead and push it directly.