Focus effect messages sent with wrong message type.

[wmrojer]

Focus effect text is sent to the client as MT_Spells instead of MT_FocusEffect. In method Client::GetFocusEffect in spell_effects.cpp and method Mob::DoCastSpell in Spells.cpp. There could be more places, but that's the ones I've found.

This makes it impossible to filter out those message on the client.