Adjusting style of the Join Contact dialog

Also fixing some minor bugs in Join Contact flow.

Bug: 3351590
Change-Id: I7191f26d7a6736920fe35216ef8766d730d3a0d7
diff --git a/res/values/styles.xml b/res/values/styles.xml
index d543a75..bba6e5b 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -149,9 +149,7 @@
         <item name="list_item_header_text_size">14sp</item>
     </style>
 
-    <style name="JoinContactActivityTheme" parent="ContactPickerTheme">
-        <item name="android:windowNoTitle">true</item>
-        <item name="android:windowContentOverlay">@null</item>
+    <style name="JoinContactActivityTheme" parent="ContactPickerTheme" >
     </style>
 
     <style name="ContactsPreferencesTheme" parent="@android:Theme">
@@ -201,4 +199,10 @@
 
     <style name="NonPhoneActivityTheme" parent="@android:Theme.Dialog">
     </style>
+
+    <style name="SectionDivider">
+        <item name="android:background">#7e7e87</item>
+        <item name="android:layout_height">2dip</item>
+        <item name="android:layout_width">match_parent</item>
+    </style>
 </resources>