Fix some issues with the Minitram Konstal 105 .b3d model.
* Make the tram 14cm narrower, by naively moving the wall’s vertices 7cm inwards.
- No longer collides with platform edges.
- Slightly restores the original appearance when viewed from the front.
* Fix some split edges in the roof hatches, which caused rendering glitches.
* Move the line number displays 3cm outwards. Fixes rendering glitches.
* Flip headlights. I textured them upside down.