Update cast screen strings.

    <string name="bluetooth_dock_settings_remember">Remember settings</string>

    <!-- Wifi Display settings. The title of the screen. [CHAR LIMIT=40] -->

    <string name="wifi_display_settings_title">Screen cast</string>

    <string name="wifi_display_settings_title">Cast screen</string>

    <!-- Wifi Display settings. The title of a menu item to enable wireless display [CHAR LIMIT=40] -->

    <string name="wifi_display_enable_menu_item">Enable wireless display</string>

    <!-- Wifi Display settings. Text that appears when scanning for devices is finished and no nearby device was found [CHAR LIMIT=40]-->