HobDrive OBD2 diag, trip

Jan 12, 2018

- Dual fuel configuration (Natural gas + petrol)
- Improvements in dialogs structure for vehicle settings and profiles.
- hobdrive now displays MPG without jams when real MPG is too big
- TinyExe: function svalid(Sensor), svaluef, svaluef_units
- Layout: Nested grids, stack-vertical/stack-horizontal, union, switch - we now can make complex layouts
Conditional elements display with 'visibility' attribute.
- Alot of bugfixes