adding shift polygon for torque converter gear, adapt shift strategy to check for torque converter shift polygon, added rules for C->C shift

adapting gearbox file: maxTorque, shift polygon for torque converter

ComputeShiftPolygon: Exception when less than 2 gears are given, GUI UpdatePic checks for Gear-Count > 1

a smaller tolerance causes that the next simulation interval will be smaller than the minimum simulation interval and thus cause other issues (e.g. high inertia torque from engine, etc.)

fix testcases: enable writing mod file in aux-test, use constant for driving cycle exceeded before brake

fix testcase for reading json files: initially used wrong indizes for gears, adaptations to new powersplit/serial AT gearbox (ratios, #gears)