gmod_game: Added server cvar for saving damagelog of every ro..

Revision 767
Added server cvar for saving damagelog of every round automatically (ttt_damagelog_save 1).
Fixed PlayerSetModel and PlayerLoadout not being called as proper hooks.
Fixed grammar in serverlog message for when a player takes credits from a corpse.
Changed Files:
[ul]
[li]trunk/gamemodes/terrortown/gamemode/admin.lua [/li][li]trunk/gamemodes/terrortown/gamemode/corpse.lua [/li][li]trunk/gamemodes/terrortown/gamemode/player.lua[/li][/ul]

Committed By Stefan van der Meer