Fix styling issues when using the DarkActionBar.

When using the "SeriesGuideLight" theme, the some widgets used in the `ActionBar` aren't inherited correctly.

Before: [Overflow](https://dl.dropboxusercontent.com/u/2301775/before_dropdownlistview.png)
Before: [Overflow Checkbox](https://dl.dropboxusercontent.com/u/2301775/before_dropdowncheckbox.png)

After: [Overflow](https://dl.dropboxusercontent.com/u/2301775/after_dropdownlistview.png)
After: [Overflow Checkbox](https://dl.dropboxusercontent.com/u/2301775/after_dropdowncheckbox.png)

This only seems to affect the DarkActionBar. I'm not sure of a way to fix it before API 14.