Small patch to controls update — Diesel Railcar Simulator Steam update #485212

This patch fixes some issues left over from the previous controls update. For example, it's now possible to assign the view menu to the left mouse button and still have the menu buttons work. The patch also fixes several crashes and has minor performance optimisations. Editors Fixed crash when trying to add speed limit signs in route editor Fixed torque curve and profile editors in train editor Fixed missing controller setting move up/down buttons in train editor Other changes Fixed Class 03 sometimes not shifting up properly under simple controls Fixed various problems in AI brake use Made HUD helper checkboxes more prominent Facebook page Youtube channel Discord server