Create configure Wi-Fi screen

Add a gear on Settings menu, and move a bunch of stuff from
overflow and advanced screen to there.  Also move add network
to be the last item in the list rather than in overflow.

Also fix WifiP2p breakage.

Change-Id: I5c84c25e5ba9224f77dcd988b0b2850ae6e71168

src/com/android/settings/wifi/p2p/WifiP2pPeer.java

@@ -23,7 +23,6 @@ import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceViewHolder;
 import android.text.TextUtils;
 import android.widget.ImageView;
-
 import com.android.settings.R;
 
 public class WifiP2pPeer extends Preference {
@@ -41,15 +40,18 @@ public class WifiP2pPeer extends Preference {
         device = dev;
         setWidgetLayoutResource(R.layout.preference_widget_wifi_signal);
         mRssi = 60; //TODO: fix
-    }
-
-    @Override
-    public void onBindViewHolder(PreferenceViewHolder view) {
         if (TextUtils.isEmpty(device.deviceName)) {
             setTitle(device.deviceAddress);
         } else {
             setTitle(device.deviceName);
         }
+        String[] statusArray = context.getResources().getStringArray(R.array.wifi_p2p_status);
+        setSummary(statusArray[device.status]);
+    }
+
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder view) {
+        super.onBindViewHolder(view);
         mSignal = (ImageView) view.findViewById(R.id.signal);
         if (mRssi == Integer.MAX_VALUE) {
             mSignal.setImageDrawable(null);
@@ -57,8 +59,7 @@ public class WifiP2pPeer extends Preference {
             mSignal.setImageResource(R.drawable.wifi_signal_dark);
             mSignal.setImageState(STATE_SECURED,  true);
         }
-        refresh();
-        super.onBindViewHolder(view);
+        mSignal.setImageLevel(getLevel());
     }
 
     @Override
@@ -87,14 +88,4 @@ public class WifiP2pPeer extends Preference {
         }
         return WifiManager.calculateSignalLevel(mRssi, SIGNAL_LEVELS);
     }
-
-    private void refresh() {
-        if (mSignal == null) {
-            return;
-        }
-        Context context = getContext();
-        mSignal.setImageLevel(getLevel());
-        String[] statusArray = context.getResources().getStringArray(R.array.wifi_p2p_status);
-        setSummary(statusArray[device.status]);
-    }
 }