simplified delegate structure by merging all of the individual speedo, tach, boost, etc delegates into generic Components encapsulated in Items. This made it easier to remove all of the hardcoded sizes.
added kph versions of all of the speedometers. Can be switched to kph by setting the speedometer units to "kph" in config_gauges.ini.
Generated some new tachometer images for 740/940 and 850R