Navigating outside of the date time window changes util window tab.

[oskirby]

To reproduce:

• Open the util window and select the date/time widget to set the clock.
• Tap the any arrow key to navigate beyond the limits of the date/time widget.
• Tab of the util window will suddenly change.

Expected behavior:

• The cursor stays within the widget and the arrow key does nothing when trying to seek passed the end of the date/time widget.

[afancorp]

grab afion if you have questions.