Parameters; Numbers now support a "SpinChange" property

Number type Parameters now support a "SpinChange" property.

This is currently only available via the business layer (E.g., from a Script).

Previously, all number Parameters changed their value by 1 when the spin buttons were clicked.

This property has been added to support the Deposit Weighted Interest Rate Report which requires that the "Round Rate to Nearest" parameter can be changed by 0.01.