[Merge] lp:~phablet-team/camera-app/disk-space-monitor into lp:camera-app

[Francis Ginther]

The mako test in the above ci results was aborted due to a mako device with a bad image. The CI run has been re-triggered and will run on a different device.
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https://code.launchpad.net/~phablet-team/camera-app/disk-space-monitor/+merge/247528
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~phablet-team/camera-app/disk-space-monitor into lp:camera-app.