Venezuela preparation of data for tmax prediction

LST climatology, added tile loop, downloading and calculation of climatology for 6 tiles in Venezuela

LST climatology, added loop to produce monhtly mean and write out tif from GRASS database

LST climatology, added function to create list of files per month and other modifications

LST climatolgoy, modified download function and added section for downloading of tiles

LST climatology, initial commit script from Jim Regetz commit 01b3830e, task#375 and task#316

LST climatology, using IDRIS API modification using datetime module, OR task#375 and task#416

LST climatology initial commit script using IDRISI API and python

Kriging tmax OR raster predictions

Database stations extraction combined with covariates for tmax and any given region