Refactoring and flexibility changes

* Split game module into game and game_interface
* Move core_lib to corelib
* Move miniwindow to corelib
* Introduce init.lua script for initializing the client, giving much more flexibility
* OTClient is no longer Application derived and is much simpler

modules/corelib/globals.lua

@@ -0,0 +1,87 @@
+rootWidget = g_ui.getRootWidget()
+
+importStyle = g_ui.importStyle
+importFont = g_fonts.importFont
+setDefaultFont = g_fonts.setDefaultFont
+
+-- G is used as a global table to save variables in memory between reloads
+G = G or {}
+
+function loadUI(otui, parent)
+  local otuiFilePath = resolvepath(otui, 2)
+  return g_ui.loadUI(otuiFilePath, parent)
+end
+
+function displayUI(otui, parent)
+  parent = parent or rootWidget
+  local otuiFilePath = resolvepath(otui, 2)
+  return g_ui.loadUI(otuiFilePath, parent)
+end
+
+function createWidget(stylename, parent)
+  if type(parent) == 'string' then
+    parent = rootWidget:recursiveGetChildById(parent)
+  end
+  local widget = g_ui.createWidgetFromStyle(stylename, parent)
+  return widget
+end
+
+function scheduleEvent(callback, delay)
+  local event = g_eventDispatcher.scheduleEvent(callback, delay)
+
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+function addEvent(callback, front)
+  local event = g_eventDispatcher.addEvent(callback, front)
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+function cycleEvent(callback, front)
+  local event = g_eventDispatcher.cycleEvent(callback, front)
+  -- must hold a reference to the callback, otherwise it would be collected
+  event._callback = callback
+  return event
+end
+
+
+function periodicalEvent(eventFunc, conditionFunc, delay, autoRepeatDelay)
+  delay = delay or 30
+  autoRepeatDelay = autoRepeatDelay or delay
+
+  local func
+  func = function()
+    if conditionFunc and not conditionFunc() then
+      func = nil
+      return
+    end
+    eventFunc()
+    scheduleEvent(func, delay)
+  end
+
+  scheduleEvent(function()
+    func()
+  end, autoRepeatDelay)
+end
+
+function removeEvent(event)
+  if event then
+    event:cancel()
+    event._callback = nil
+  end
+end
+
+function reloadModule(name)
+  local module = g_modules.getModule(name)
+  if module then
+    module:reload()
+  end
+end
+
+function reloadModules()
+  g_modules.reloadModules()
+end