Fixed a typp in UGC uploader (+ some translations)
Added texture name to ShaderAPIDX8::CreateD3DTexture warning
Merge some func_tracktrain changes from P2/CSGO
* Allow Roll spawnflag
* hack to avoid gimble lock
* SF_CORNER_TELEPORT interpolation change
* Dead end path change
* Added missing spawnflag (4), updated description of "HL1 train" spawnflag
Lets try turning "gamemode is nil" crashes into Lua errors
* Seems to not crash on its own, and is slightly better/debuggable user experience
Add likely fail reason to ShaderAPIDX8::CreateD3DTexture warnings
* It's 1x1 DXT5 textures in my experience, so we test for that