Update footer buttons depending on entry point

    <!-- Title shown in face enrollment dialog [CHAR LIMIT=40] -->

    <string name="security_settings_face_enroll_repeat_title">Center your face in the circle</string>

    <!-- Button text to skip enrollment of face [CHAR LIMIT=40] -->

    <string name="security_settings_face_enroll_enrolling_skip">Do it later</string>

    <string name="security_settings_face_enroll_enrolling_skip">Skip</string>

    <!-- Text shown when "Add face" button is disabled -->

    <string name="face_add_max">You can add up to <xliff:g id="count" example="5">%d</xliff:g> faces</string>

    <!-- Text shown when users has enrolled a maximum number of faces [CHAR LIMIT=NONE] -->