a lot of changes in modules

modules/core_lib/core_lib.otmod

@@ -3,6 +3,8 @@ Module
   description: Contains core lua classes, functions and constants used by other modules
   author: OTClient team
   website: https://github.com/edubart/otclient
+  autoload: true
+  autoload-antecedence: 10
 
   onLoad: |
     dofile 'ext/table'
@@ -21,5 +23,3 @@ Module
     dofile 'keyboard'
     dofile 'mouse'
 
-  onUnload: |
-    rootWidget = nil