QS: Wifi control panel.

Create first example of an inline detail view with line
items, bind to new access-point controller.

Move the common bits of all control panels into a
common abstraction.  Share common parts of layout
(More settings / done button).

Change-Id: I14a1bf548f3291dc628f97bf09dd4e38ac2fb2dc
diff --git a/packages/SystemUI/res/values/styles.xml b/packages/SystemUI/res/values/styles.xml
index e5d5b03..dd1b749 100644
--- a/packages/SystemUI/res/values/styles.xml
+++ b/packages/SystemUI/res/values/styles.xml
@@ -176,6 +176,7 @@
         <item name="android:textSize">14sp</item>
         <item name="android:textAllCaps">true</item>
         <item name="android:fontFamily">sans-serif-medium</item>
+        <item name="android:gravity">center</item>
     </style>
 
     <style name="BaseBrightnessDialogContainer">
@@ -233,6 +234,11 @@
         <item name="android:colorControlActivated">#ffffffff</item>
     </style>
 
+     <style name="QSBorderlessButton">
+        <item name="android:padding">12dp</item>
+        <item name="android:background">@drawable/btn_borderless_rect</item>
+        <item name="android:gravity">center</item>
+    </style>
     <style name="BorderlessButton" parent="@android:style/Widget.Material.Button.Borderless" />
 
     <style name="BorderlessButton.Tiny">