Added 250m bands to MODIS Frontend.
Includes a slightly updated interp function and a reworking of the
guidebook to use a filename pattern to determine the variable name and
index.
Added MODIS Visible band 1 and 2 saturation clipping.
Saturation fill values get set to the maximum valid number for that
data.
Added VIIRS I02 and MODIS Vis02 to AWIPS configuration.
Also added Band 2 to default 8-bit rescaling configuration file.