Call OnContact when touching another entity during PSAM

Improved the button pressed processing code for possession.

Godmode tool.

Edit the information tool's description.

TraceHull fix for nextbots with a model scale > 1

Monkey patched effects.Register to fix the propspawn.lua issue. This is a temporary fix that I will revert once the next Gmod update that (hopefully) fixes this comes out.

Fix possession lock on living in Spain without the a.

Fix for addons that forget to check that the inflictor field of CTakeDamageInfo objects is valid before doing stuff to it. This should resolve issues with most incompatible addons.

- Fixed a few issues with the code.
- Sprite nextbots now have their shadows disabled by default.

Fixed antlions still making noises once they're killed + fixed issue related to net messages spamming (previous fix)