Add "gap between frames" to MD2D benchmarks
Use high resolution timers in benchmarks (when available)
Add "gap between frames" benchmark to E2D and Solar System models
sensor interactive: reorder buttons left-to-right

Dan will later adjust the reset button to be to be at the top, just left of the model view (sensor type selector, etc.)

IS [#57308536]
Merge master into sensor-applet
add multi sensor support to sensor-applet

this multi sensor support is not yet extended to the sensor model
this also uses this multi sensor support in the multi sensor experiment
[#57273422]