[Commands] Cleanup #emotesearch and #emoteview Command. (#2494)

* [Commands] Cleanup #emoteview Command.

Cleanup command messages and logic.

Add constants for Emote Events and Emote Types and replace all the old constants with the new constants.

* Update emoteview.cpp

* Cleanup #emotesearch Command.

zone/npc.h

@@ -35,16 +35,6 @@
 	#define M_PI	3.141592
 #endif
 
-#define LEAVECOMBAT 0
-#define ENTERCOMBAT 1
-#define	ONDEATH		2
-#define	AFTERDEATH	3
-#define HAILED		4
-#define	KILLEDPC	5
-#define	KILLEDNPC	6
-#define	ONSPAWN		7
-#define	ONDESPAWN	8
-
 typedef struct {
 	float min_x;
 	float max_x;