VectorVisualization: Added backwards compatibility for loading sessions prior to 1.11
With the added streambarbs, some session configurations were introduced. Previously, all settings were in the sub menu Windbarbs
. With the added streambarbs, an additional sub menu Streambarbs
got introduced. Some of the settings between the two visualization methods are shared: The variables for the u/v components, and information about the rotation/projection of the grid. With the streambarbs update, these settings were moved to the shared super level menu.
However, this made old session files incompatible. This MR adds a backward compatibility check that reads the settings from old session files correctly.