New theme for the dialtacts activity (no shadow/no title)

This brings the tabs and text dial in line with the UI mocks.
Note that it is still consistent with traditional UIs where
the title and notification bar are on the same z-index, it
is just that a tab activity's title is the active tab.

Bug 2104523
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 97dad56..68751db 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -62,7 +62,7 @@
         <!-- Tab container for TwelveKeyDialer and RecentCallsList -->
         <activity android:name="DialtactsActivity"
             android:label="@string/launcherDialer"
-            android:theme="@android:style/Theme.NoTitleBar"
+            android:theme="@style/DialtactsTheme"
             android:launchMode="singleTask"
             android:clearTaskOnLaunch="true"
             android:icon="@drawable/ic_launcher_phone"