Add project file.
move function to mainwindow
change local ncl library
Add ContourPlotter
Test png plot.
Move workstation_type to param_map.
Fix map name.
Add three project preparing for output multi-type plots.
Plot image in GUI by QProcess and change return method in
ContourCommandTool.
Plot on x11 and png at the same time.

Some error:

* need click after x11 plot.