Folder Tabs selection order should be kept (and used)

DOpus should keep track of the order in which the user selects folder tabs and use this order at least in the following cases:

  • For command: "Go TABSELECT prev"
    (so the user would be able to cycle through ALL folder tabs using this command);

  • When the user closes a folder tab, DOpus should select the one which was previously being used.

This is the way advanced text editors handle their file tabs -- PSPad and UltraEdit come to mind.