Merge "Update some battery string comments" into oc-dev

    <string name="battery_last_full_charge">Last full charge</string>

    <!-- Description for text in battery footer. [CHAR LIMIT=120] -->

    <string name="battery_footer_summary">Remaining battery time is approximate and can change based on usage</string>

    <!-- Title for battery usage detail in foreground. [CHAR LIMIT=80] -->

    <!-- Title for text that shows the amount of time an app has been running while in the foreground. [CHAR LIMIT=80] -->

    <string name="battery_detail_foreground">While in active use</string>

    <!-- Title for battery usage detail in background. [CHAR LIMIT=80] -->

    <!-- Title for text that shows the amount of time an app has been running while in the background. [CHAR LIMIT=80] -->

    <string name="battery_detail_background">While in background</string>

    <!-- Title for battery usage amount by this app. [CHAR LIMIT=80] -->

    <string name="battery_detail_power_usage">Battery usage</string>