QML Camera element redesign.

Grouped camera properties in a similar way to C++ QCamera API.
Added support for video recording.

Change-Id: I8667dc90878b3e20eda5523ba562f5687bd0932b
Reviewed-on: http://codereview.qt-project.org/3552


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: derick hawcroft <derick.hawcroft@nokia.com>