Open by default the recently used point/track folder

When using the point manager control shortcut from an on-screen panel, open directly the recently used folder instead of opening the Points tab of the generic Data screen. A step in the good direction is currently implemented as the position in the list of folder is memorized.

A first improvement could be to remember if the tracks folder list was open instead of the points list.

The preferred improvement should be to remember the last opened folder (list of points or tracks) and open it directly to allow to shift very efficiently from to map to the folder and back when processing several points or tracks in a row. The current point or track position in that list should also be memorized as it is done for the current folder position.

From their, going back to the current situation is very easy using the back arrow.