add missing_value field to tsg_ncvar.csv for <var>_QC variables
add autonan mode with FillValue_ attribut
correct bug on last selected display QC, tsg structure wasn't saved before display QC
add option/preference mode for autoloading data and use .mat file in prefdir to save user preferences
add tag to handle axes but don't use it

rewrite all netcdf read & write module with support of autonan mode
Draw climatology line with tag, rewrite and simplify new climatology plot
Use a structure saved in main uimenu hClimatoMenu userdata property to memorized
climatology state (and the need to load a different climatology)
May other other .....

mis le champs en majuscule pour automatiser le traitement dans headerform par une simple itération sur les clés

creation du fichier tsg_plateform_info.mat qui sera utilisé pour  le remplissage ou la maj de headerForm.m
Procédure suivit pour sa création manuelle:

platform_info = tsg_nc('tsg_platform.csv')
get(platform_info,'PASTEUR'))
save tsg_platform_info.mat platform_info
load tsg_platform_info.mat