App: Rerouting options

[devemux86]

Related to user report and discussion in:

Rerouting changes the planned route

Setting is: no automatic recalculation of the route. When now being off the planned route, the blue arrow on the top appears to recalculate the route. So far so good. Using it, sometimes there is an additional option to select recalculate from Start or recalculate to next waypoint, sometimes the recalculation starts without showing this additional option menu. The problem is: when no additional menu is shown and recalculation starts directly and even if using to recalculate to next waypoint, it…