Ideas more complex transmission

- new sub-class of vehicleControlAddonTransmissionBase
  - list of forward gear ratios
	- optional list of reverse gear ratios
	- optoinal list of forward range ratios
	- optional list of reverse range ratios
	- gear names, upshift and downshift times, ...
	- same for ranges
	
- copy of own transmission screen
	- comma separated list of gear ratios 
	- comma separated list of reverse gear ratios; empty means same as forward
	- same for ranges 
	- same for gear and range texts
	- same for gear and range upshift times, no value => 0 => power shift 
	- different layout?
	- explanation text shows final gear speeds?
	
- button to save transmission to config.xml with popup for name