#4994 Deathmatch counter fields get forgotten

[Kimmo Rundelin]

Deathmatch sets the quest state like:
player.setQuest("deathmatch", deathmatchState.toQuestString());
at several places. DeathmatchState is not aware of the counter fields, so those get forgotten.

[Hendrik Brummermann]

There is an achievement which depends on the count.