Implemented the mount interface, Fixed some interface stuff, Some cosmetics, and Updated the outfits window

* Added new arrow buttons.
* Fixed the vertical separator.
* Added new game_playermount module to handle player mounting.
* Moved the battle icons to /images.
* Outfit window accommodates for mounts, loads addons more efficiently and keeps addons set on update, added new Outfit.randomize function that allows you to randomize your outfit colors, and set up a new layout.

modules/game_playerdeath/playerdeath.lua

@@ -23,7 +23,7 @@ end
 
 function PlayerDeath.reset()
   GameInterface.getMapPanel():recursiveGetChildById('centerAdvance'):hide()
-  if(deathWindow) then
+  if deathWindow then
     deathWindow:destroy()
     deathWindow = nil
   end
@@ -44,7 +44,7 @@ function PlayerDeath.displayDeadMessage()
 end
 
 function PlayerDeath.openWindow()
-  if(deathWindow) then
+  if deathWindow then
     return
   end
   deathWindow = g_ui.createWidget('DeathWindow', rootWidget)