Update serverevents.res

`player_say` includes `teamonly` field.

Update surfaceproperties.txt

These values are not used, idk how they even got here

Make npc_security_camera duplicatable

Minor style fix

Fixed up PR #1989

Do not use magic numbers for net.Read/WriteEntity

Move derma icon browser to a more sensible place

So we don't have to worry about forcing clients to download a pointless file that returns on execution

Fixed an error when dupe-spawning admin only NPCs without player obj

Fixed MarkupObject:Draw's new argument not working without MaxWidth b…

…eing set

Permissions & "remember my choice"