BEAWARE all game functionality is disabled with this commit for a while

* rework client modules
* hide main window when loading
* remake top menu functions
* rework modules autoload
* improve path resolving for otml and lua
* move core_widgets to core_lib
* fix tooltip issues
* split some styles
* add bit32 lua library
* fix assert issues
* fix compilation on linux 32 systems
* rework gcc compile options
* renable and fix some warnings
* remove unused constants
* speedup sprite cache
* move UIGame to lua (not funcional yet)
* fix a lot of issues in x11 window
* fix crash handler
* add some warnings do uiwidget
and much more...

modules/client_about/about.lua

@@ -2,22 +2,33 @@ About = {}
 
 -- private variables
 local aboutButton
+local aboutWindow
 
 -- public functions
 function About.init()
-  aboutButton = TopMenu.addRightButton('aboutButton', 'About', 'about.png', About.display)
-end
-
-function About.display()
-  displayUI('about.otui', { locked = true })
+  aboutButton = TopMenu.addRightButton('aboutButton', 'About', 'about.png', About.show)
+  aboutWindow = displayUI('about.otui')
+  aboutWindow:hide()
 end
 
 function About.terminate()
   aboutButton:destroy()
   aboutButton = nil
+  aboutWindow:destroy()
+  aboutWindow = nil
   About = nil
 end
 
+function About.show()
+  aboutWindow:show()
+  aboutWindow:raise()
+  aboutWindow:focus()
+end
+
+function About.hide()
+  aboutWindow:hide()
+end
+
 function About.openWebpage()
   displayErrorBox("Error", "Not implemented yet")
 end