Handle particle spawners in env and delete expired ids

Rebased by Zeno (2016-04-2016)

src/server.h

@@ -287,6 +287,7 @@ public:
 		const std::string &playername);
 
 	void deleteParticleSpawner(const std::string &playername, u32 id);
+	void deleteParticleSpawnerAll(u32 id);
 
 	// Creates or resets inventory
 	Inventory* createDetachedInventory(const std::string &name);
@@ -662,11 +663,6 @@ private:
 	// key = name
 	std::map<std::string, Inventory*> m_detached_inventories;
 
-	/*
-		Particles
-	*/
-	std::vector<u32> m_particlespawner_ids;
-
 	DISABLE_CLASS_COPY(Server);
 };