Unaligned input regridding to clone mask

[BramDr]

When regridding a course resolution (netCDF) array, a factor is applied and the array is uniformly downscaled based on this factor. However, for cases where the fine resolution bounds to not match up with the coarse resolution bounds, this will not work. Rather the regridded coarse resolution array will be too large.

At minimum, the model should stop running and give a clear error when this may occur. Better would be to incorporate regridding for unaligned grids.