add an advanced button to AccountCreationWizard that open the accountModificationWindow

remove U it is not needed nor works; remove it also from glade, remove crazy hboxing and use fill and other similar properties

comment get_real_jid_from_fjid to assure future protection from refactoring and add docstring to get return values without reading the code. Both are importnat for such api funcs

less wordy and concise is welcome but not if they are not understable. moreover it is better that the user understands what that is than see a small tooltip and not completely understand. I revert with the only change that I agree that the first The can be removed. "Used this window" you cannot be serious though.. :P

if we don't habe the real jid, we don't show bigger avatar cause it's not saved in HD

self.node_to_dict always return a dict