more changes to master script 7, stage 7 and testing

stage 7 mosaicing following assessment, script cleaned and integrated to workflow

mosaicing functions, option to remove temporary files

mosaicing functions, fixing outputs names and directories

fixing function to create mosaics of residuals

mosaicing script function, fixing output filename and output directory

testing mosaicing in the workflow and debugging

mosaicing script, adding option to remove temporary files after mosaicing

mosaicing script, clean up of code and debugging for options

mosaicing script, adding options to run accuracy layers, variable predicted and other options