Gingerbread pls go

Look like an Android app from 2013.

Remove the redundant Gingerbread button styles from buttons to
automatically use the Holo theme on phones that don't run a 3+ year old
operating system.

Create a new style for horizontal progress bars that uses the Holo
progress bar style on v11 and above.

res/values/styles.xml

@@ -85,4 +85,7 @@
         <item name="android:textSize">14sp</item>
     </style>
 
+    <style name="Widget.ProgressBar.Horizontal" parent="@android:style/Widget.ProgressBar.Horizontal">
+    </style>
+
 </resources>