Merge "Update string for battery main page" into oc-dev

    <!-- Title for the cellular network in power use UI(i.e. Mobile network scanning: 30% of battery usage) [CHAR_LIMIT=40] -->

    <string name="device_cellular_network">Mobile network scanning</string>

    <!-- Label for list of apps using battery in power use UI [CHAR_LIMIT=60] -->

    <string name="power_usage_list_summary">App usage since full charge</string>

    <!-- Label for time since last full charge in power use UI, i.e. "7 h 20 min ago" [CHAR_LIMIT=60] -->

    <string name="power_last_full_charge_summary"><xliff:g id="time">%1$s</xliff:g> ago</string>

    <!-- Label for list of apps using battery in power use UI [CHAR_LIMIT=120] -->

    <string name="power_usage_list_summary">App usage since full charge (<xliff:g id="time">%1$s</xliff:g> ago)</string>

    <!-- Description for the screen usage item [CHAR_LIMIT=120] -->

    <string name="screen_usage_summary">Amount of time screen has been on since full charge</string>

    <!-- Label for list of different types using battery in power use UI [CHAR_LIMIT=60] -->