TCS and brake controller API changes
New TCSEvent values in order to know which device is asking for an alerter reset (so that only some devices can reset the alerter)
Pressure unit determination using the cabview controls pressure unit
Pressure unit override combobox in the Options
Some tabs cleaned in TrainCar.cs
git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@2239 a9f3cfff-6c41-7446-b0ca-052bd761e6eb