[Merge] lp:~artmello/webbrowser-app/webbrowser-app-swipe_to_delete into lp:webbrowser-app

[Arthur Mello]

I think I fixed the problem with the model. When all the entries of a model were removed, we set the lastVisited property to zero. And that way we change the positions of the HistoryDomainListChronologicalModel. Since the domain is empty and will be removed, we don't need to update its infos.
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https://code.launchpad.net/~artmello/webbrowser-app/webbrowser-app-swipe_to_delete/+merge/229550
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