Camera view position overlaps active view in split modes

• Select "Always show camera view" from "Visibility toggles" menu in 3D view
• Change to various split modes and change the active split

--> In many cases the camera view overlaps the active split, though it should always try to position itself so that it doesn't overlap the active view. Only acceptable to overlap is single view and horizontally split view, where there is plenty of space.

Also, changing split mode should reposition the camera view correctly for the new mode.