GAM LST, adding new model with grass land cover, task #361

GAM using LST as input variable task #361

GAM, modification of nesting of models and clean up, task #361

Kriging, adding LST for co-kriging: task #364

Kriging, slight modification and clean up, task #364

Kriging, modification to save kriged surfaces in geotiff and png files, task #364

Kriging, modifying code to save training and testing samples in shapefiles: task #364

Kriging for OR, this is the first script, task #364

GWR modified code to save plots and images, task #364

GWR assessment by visualizing residuals using kriging