[Merge] lp:~abreu-alexandre/webbrowser-app/remove-session-storage into lp:webbrowser-app

[Olivier Tilloy]

I’m still seeing meaningless changes in po/webbrowser-app.pot, can you please revert them? It will avoid potential conflicts when merging other branches that have string updates.
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https://code.launchpad.net/~abreu-alexandre/webbrowser-app/remove-session-storage/+merge/234144
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