added test_process_isimip_data_monthly_w5e5
to check if flattening approach has worked (right coordinates used),
if the process_isimip_data works and to check that when we use no bias correction (betweeen W5E5 and ISIMIP3b), still mean and annual cycle are conserved
-> this check there inside could be repeated once for more glaciers to make sure that it is ok to use no bias correction!
test_process_isimip_data_daily_w5e5test_process_isimip_data_monthly_w5e5to check if flattening approach has worked (right coordinates used), if theprocess_isimip_dataworks and to check that when we use no bias correction (betweeen W5E5 and ISIMIP3b), still mean and annual cycle are conserved -> this check there inside could be repeated once for more glaciers to make sure that it is ok to use no bias correction!