[Merge] lp:~fboucault/camera-app/ui_rewrite into lp:camera-app

[Olivier Tilloy]

Quickly looking into the above crash, I can see that m_cameraFlashControl is not initialized to NULL in AdvancedCameraSettings::AdvancedCameraSettings(), which is BAD™.
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https://code.launchpad.net/~fboucault/camera-app/ui_rewrite/+merge/224451
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