Back, Forward and the subtabs share one row since A1, but the row jumped
when switching between Overview, Routes and Hotspots and the two system
views: System structure and Behavior set the view's frame to 16 px instead
of 28 and 32 and gave the tabs their own padding and gap. "← Back" stood at
x 32, y 98 in the first three and at x 16, y 86 in the other two.
The system views now use the frame and the row of the other subtabs. The
Back button stands at x 32, y 98.3 in all five.
Signed-off-by: Bernhard Jackiewicz <bj@techport.io>