- wrap json_encode in Util::toJson to always encode with the same flags

- implemented secondary tooltips with spawnPoints
- merged Mapper.js back into global.js
 * fixed wrong id for Nexus Instance
 * the ToC Dungeon no longer has a second layer
- fixed displaying waypoints as spawns
- images in pageText are now PNG instead of JPG to accomodate for transparency

static/js/locale_enus.js

@@ -2059,7 +2059,6 @@ var g_zone_areas = {
     4395: ['Dalaran City', 'The Underbelly'],
     4494: ['Ahn\'Kahet', 'Level 2'],
     4722: ['Crusaders\' Coliseum', 'The Icy Depths'],
-    4723: ['Crusaders\' Coliseum', 'The Icy Depths'],
     4812: ['The Lower Citadel', 'The Rampart of Skulls', 'Deathbringer\'s Rise', 'The Frost Queen\'s Lair', 'The Upper Reaches', 'Royal Quarters', 'The Frozen Throne', 'Frostmourne']
 };