Fix few bugs : crash when popup is closed above 90%, auto u bias not resetting properly, meas_name not updating when new spreadsheet is load

QRame 1.26 : right click measurement name to update, distribution with violin/nb of transects, add selected measurement on discharge graph, fix bugs from pickles save with external import, compute cochran for external import measurement

[Not completed yet] Fix many bugs from results import, start working on intercomparison computation from different tools

Return to QRevInt 1.18 (1.25 is bugged), add Serial Number, add columns to group selection, fix a bug from Oursin draft scenario, change plot discharge over time to plot transect discharge instead of measurement mean