bug fixes

. fix temp file access permission (on winnt)
. fix deleting intermed files when skipdss is enabled (force save
intermed files)
. fix skip_dss argument
preview data file

ui and slot to preview first 10 lines of data file
prepared to receive full paths

output arg can receive the output file full path. it will try and guess
the output directory (relative path, 3 levels down on the tree), only
when output full path is not given.
fixed paths manipulation

. using given args outputdir and outputfile instead of dss par
. forcing relative nt paths, two levels down (instead of three), both
for input and output
fix for batch_decade using given results path

. batch_decade with arg for network_id (optional)
. use given (decadal) data directory, if not try to guess from variogf
. clarified some docs
ui and manipulation for decades directory

. gui (label, lineedit, pushbutton)
. connected to checkbox
. dialog
. save and load
batch_networks fix

adapted to use gscpar.results as the output folder.
ui grid minimum default values

changed minimum value for cell size and nodes number to 1.