[Merge] lp:~phablet-team/network-manager/lp1361864-2 into lp:~phablet-team/network-manager/vivid-phone-overlay

[Tony Espy]

Re-tested version 15.1.6 on krillin (rc-proposed/bq-aquaris.en #60, ~OTA5 ).

Quick sanity check of boot, flight-mode, and set-radio-tech.  Verified that ofono restarts no longer crash NM.
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https://code.launchpad.net/~phablet-team/network-manager/lp1361864-2/+merge/263982
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