[Merge] lp:~phablet-team/history-service/fix_qtdbus_5.6 into lp:history-service/staging

[Roberto Mier Escandón ]

Review: Approve

not needed to be aligned with tp-qt 0.9.7 in this branch. lgtm.
understood the order of registering
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https://code.launchpad.net/~phablet-team/history-service/fix_qtdbus_5.6/+merge/309398
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