Minor cleanups
Queue lua_error_url messages until SteamHTTP is available
Make Lua print() and error() colors the same
Compile warning fixes
Update Metrocop player model to have a valid shadow LOD
Do not render dragndrop overlay when UI mouse input is not active
A bit of a bandaid fix, but it works.
Minor cleanups
FPS independent CUserCmd:GetMouseY/X on server
Client's FPS would affect the values the server gets (higher FPS - more intermittent results, causing "low sensitivity")
Now we accumulate the mouse deltas when client performs "extra mouse sampling" and send the accumulated value instead of whatever happened to be the latest delta value.
This affects Physics Gun +USE rotation and GMOD_Camera by default, but also all mods using the aforemention functions. They should now function more predictably regardless of client FPS.