Added hitgroup commands, including zr_hitgroup, zr_hitgroup_enable_all, and zr_hitgroup_headshots_only.

Updated hitgroup configs, updated translations
Added logging for hitgroups and configs.

src/zr/commands.inc

@@ -35,6 +35,7 @@ CommandsInit()
     LogOnCommandsCreate();
     ClassOnCommandsCreate();
     WeaponsOnCommandsCreate();
+    HitgroupsOnCommandsCreate();
     InfectOnCommandsCreate();
     MenuOnCommandsCreate();
     ZAdminOnCommandsCreate();