Refactor loadUrl
Fix wrong function name: loadUrl -> load
First step to subclass QTextEdit
Change TextEdit constructor
Docstring for TextEdit
Add docstring
Done documentation @ setting margins
Done documentation @ retrieving global application instance
Fix docstring @ TextEdit
Note about bad import convention
First step to build the event filter for TextEdit
Refactor -> add isKeyEvent
Using py3k's new super().__init__()
Note about weird key behaviours @ TextEdit