Settle open particle slot questions

Slots hold up to 9 entries, so the slot editor is one entry row plus the
bottom bar, and the server team may spawn 90 particles per tick. The
water and lava rings for taking part in any event return as reward
designs, and locked slots can be deleted from their read-only view.

LobbySystem/src/de/steamwar/lobby/LobbySystem_de.properties

@@ -56,6 +56,7 @@ PARTICLE_UNLOCKED_BY_SPECIFIC_TEAM_EASTER = §fTeam {0} (Oster-Eierer-Suche)
 PARTICLE_UNLOCKED_BY_SPECIFIC_USER = §fUser {0}
 PARTICLE_UNLOCKED_BY_SPECIFIC_USER_EASTER = §fUser {0} (Oster-Eierer-Suche)
 PARTICLE_UNLOCKED_BY_SERVER_TEAM = §fServerteam
+PARTICLE_UNLOCKED_BY_EVENT = §fEventteilnahme
 PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT = §f{0} 1., 2. oder 3. Platz
 PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION = §f{0}
 PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_HALF = §fFinde 45 Oster-Eierer
@@ -352,6 +353,7 @@ PARTICLE_EVENT_ENCHANTING = §cVerzaubert
 PARTICLE_EVENT_CLOUD = §fWolken
 PARTICLE_EVENT_SMOKE = §7Rauch
 PARTICLE_EVENT_WATER = §bWasser
+PARTICLE_EVENT_LAVA = §cLava
 PARTICLE_EVENT_WINGS = §fFlügel
 PARTICLE_EVENT_RAIN_CLOUD = §fRegenwolke
 PARTICLE_EVENT_WGS = §fWGS