Merge "Update screen pinning instructions for QuickStep." into pi-dev

    <!-- [CHAR LIMIT=28] Screen pinning title -->

    <string name="screen_pinning_title">Screen pinning</string>

    <!-- [CHAR LIMIT=300] Screen pinning description -->

    <string name="screen_pinning_description">When this setting is turned on, you can use screen pinning to keep the current screen in view until you unpin.\n\nTo use screen pinning:\n\n1. Make sure screen pinning is turned on.\n\n2. Open the screen you want to pin.\n\n3. Tap Overview.\n\n4. Swipe up and then tap the pin icon.</string>

    <string name="screen_pinning_description">When this setting is turned on, you can use screen pinning to keep the current screen in view until you unpin.\n\nTo use screen pinning:\n\n1. Make sure screen pinning is turned on\n\n2. Open Overview\n\n3. Tap the app icon at the top of the screen, then tap Pin</string>

    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->

    <string name="screen_pinning_unlock_pattern">Ask for unlock pattern before unpinning</string>

    <!-- [CHAR LIMIT=60] Unlock setting for screen pinning -->