Fixed normals on more built-in models
* de_tides signs
* fanhousing models (CS:S and EP2)
* "Thrown" versions of CS:S grenades + the holster without a gun
* furnitureArmchair001a.mdl
Add fallback CS:S hostage pain sounds
* For TTT, but also any other addon out there
* The sounds are just the citizen ones
Force panels to think & enable clipping when main menu is open
Get rid of some usages of Bootil::BString from lua_shared
* ILuaShared unchanged
Minor cleanups
Reduce code duplication when calling Lua functions from C