[Merge] lp:~daker/webbrowser-app/fix.1248728-2 into lp:webbrowser-app

[Rodney Dawes]

This doesn't actually fix bug #1328183 here. It only changes the agent for plus.google.com but not other sites, so one will still see many ads for using an Android app, instead of just having the mobile sites work.
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https://code.launchpad.net/~daker/webbrowser-app/fix.1248728-2/+merge/223171
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~daker/webbrowser-app/fix.1248728-2 into lp:webbrowser-app.