Sorting order not restored on startup with 0.7 (take 3)

[nekohayo]

Testing git master now with ./launch.sh -s some_dataset, I must sadly point out that #1020 (the successor to #353) is still not fixed, in any of the views.

When I open gtg_dev_folder/tmp/the_dataset/xdg/config/gtg/gtg.conf in gedit on the side, and then change the sort order with the menubutton in GTG's main window, I can see that it sets the value for the sort_mode_open variable in the gtg.conf file... however it does not seem to actually read/use/restore it on next startup: GTG remembers and restores which of the 3 views was used, but does not set the sorting order in the views / the sorting popovermenu.

I also noticed that it only saves that one variable in the file, it doesn't seem to save a variable for the sorting direction (ascending or descending)?

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P.S.: I also saw that there were leftover variables like

tasklist_sort_column = 6
tasklist_sort_order = 1

…in that file. However, GTG doesn't remove / clean them if present, so I guess it ignores them too; if I delete those lines, they don't come back.