2 - SSPS : code qualite BAD pour FLOW < 1l/min
3 - Affichage de la variable PRES, si elle existe.
4 - Correction d'un bug dans : readTsgDataLabview. Mauvaise
assignation des valeurs de frequence (SSJT et CND) lorsque
qu'une date etait erronnée (date a NaN)

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