Fix crash if a vehicle is removed while shown in the Departure Board window.

v1.3 - Update for May 10 2022 version of Transport Fever 2.

1. When a vehicle is diverted to an alternate platform/terminal, show the new terminal number with a exclamation mark.

2. Fix crash due to API change: "util.CameraController:focus()" now needs an additional bool parameter.

v1.2
The Display Window width is now set by a numeric option, instead of by dragging the window edge, which was causing problems.

Possible fix to prevent the width of the Departure Board display window continually increasing or decreasing.

v1.1
- Changed the display of road vehicle Route Name (derived from the Line Name) to match the display of other Line Names.
- Changed the 2nd parameter of Window:setVisible() calls from true to false. This may fix problems, but probably not.
- When the Display Window is closed, and then opened by clicking on the "Depart" button on the TF2 taskbar, it is opened at top-left corner of the screen.

More missing 'local' keywords added to fix crash.

Fixed crash on load. (Added keyword 'local' before lines 805, 849 of DepartureBoardGui.lua)