New Annual Crop Stats unit system controls

You can now set specific unit system customizations to each widget on your dashboard.  You can choose between Metric and US Customary systems (and post widgets of different types on the same dashboard) and also choose the scaling method for each type of attribute.  You can choose whether area values are displayed in hectares (metric),  1000 hectares, 1000000 hectares, and similarly for quantity and US customary type values.  Yield values can be displayed in thousandths (specifically to convert Yield values from tonnes per hectares to kilograms per hectare).