"Edit Terrain" button in Terrain Sets view #3844

When figuring out terrain labels for a new tileset, or working with unusual terrain set-ups, it's often helpful to go from testing the terrains in a map to editing them in the Tileset editor. To that end, it would be very nice to have an "Edit Terrain" button right in the Terrain Sets view. Clicking it would open the tileset for the currently selected Terrain Set, and ideally also automatically enable the Terrain Editor and select the same Terrain Set and Terrain that were selected in the Terrain Sets panel when the button was clicked.

Quick mock-up, reusing the "Edit Tileset" icon: