[Merge] lp:~phablet-team/media-hub/add-logger into lp:media-hub

[Alfonso Sanchez-Beato]

Review: Approve

Thanks for the changes. LGTM, although I do not agree with how the Logger is designed. As discussed, we need to rethink it and come back to this when we do so.
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https://code.launchpad.net/~phablet-team/media-hub/add-logger/+merge/291010
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