Refactor modules, closes #223

* All modules are sandboxed now
* All images,sounds,fonts,translations and styles were moved to "data" folder
* Reorganize image files folders
* Remove unmaintained modules: client_particles, client_shaders
* Implement new automatic way to load styles and fonts
* Add hide/show offline option in VipList
* Add invite/exclude to/from private channel in players menus
* Many other minor changes

modules/game_battle/battle.lua

@@ -13,10 +13,10 @@ hideSkullsButton = nil
 hidePartyButton = nil
 
 function init()
-  g_ui.importStyle('battlebutton.otui')
-  battleButton = TopMenu.addRightGameToggleButton('battleButton', tr('Battle') .. ' (Ctrl+B)', 'battle.png', toggle)
+  g_ui.importStyle('battlebutton')
+  battleButton = modules.client_topmenu.addRightGameToggleButton('battleButton', tr('Battle') .. ' (Ctrl+B)', '/images/topbuttons/battle', toggle)
   battleButton:setOn(true)
-  battleWindow = g_ui.loadUI('battle.otui', modules.game_interface.getRightPanel())
+  battleWindow = g_ui.loadUI('battle', modules.game_interface.getRightPanel())
   g_keyboard.bindKeyDown('Ctrl+B', toggle)
 
   -- this disables scrollbar auto hiding

modules/game_battle/battle.otmod

@@ -4,6 +4,6 @@ Module
   author: andrefaramir, BeniS
   website: www.otclient.info
   sandboxed: true
-  scripts: [ battle.lua ]
+  scripts: [ battle ]
   @onLoad: init()
   @onUnload: terminate()

modules/game_battle/battle.otui

@@ -22,25 +22,25 @@ BattleIcon < UICheckBox
     image-color: #ffffff88
 
 BattlePlayers < BattleIcon
-  image-source: /game_battle/images/battle_players.png
+  image-source: /images/game/battle/battle_players
 
 BattleNPCs < BattleIcon
-  image-source: /game_battle/images/battle_npcs.png
+  image-source: /images/game/battle/battle_npcs
 
 BattleMonsters < BattleIcon
-  image-source: /game_battle/images/battle_monsters.png
+  image-source: /images/game/battle/battle_monsters
 
 BattleSkulls < BattleIcon
-  image-source: /game_battle/images/battle_skulls.png
+  image-source: /images/game/battle/battle_skulls
 
 BattleParty < BattleIcon
-  image-source: /game_battle/images/battle_party.png
+  image-source: /images/game/battle/battle_party
 
 MiniWindow
   id: battleWindow
   !text: tr('Battle')
   height: 166
-  icon: battle.png
+  icon: /images/topbuttons/battle
   @onClose: modules.game_battle.onMiniWindowClose()
   &save: true