add icon back

// FREEBIE

res/values/styles.xml

@@ -18,12 +18,14 @@
            parent="@style/Widget.AppCompat.ActionBar">
         <item name="background">@color/gray95</item>
         <item name="elevation">1dp</item>
+        <item name="logo">@drawable/actionbar_icon_holo_dark</item>
     </style>
 
     <style name="TextSecure.LightActionBar"
            parent="@style/Widget.AppCompat.ActionBar">
         <item name="background">@color/gray5</item>
         <item name="elevation">1dp</item>
+        <item name="logo">@drawable/actionbar_icon_holo_light</item>
     </style>
 
     <style name="TextSecure.ClearTitleTextStyle" parent="TextAppearance.AppCompat.Widget.ActionBar.Title">

src/org/thoughtcrime/securesms/ConversationListActivity.java

@@ -69,6 +69,10 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
 
     setContentView(R.layout.conversation_list_activity);
 
+    getSupportActionBar().setHomeButtonEnabled(true);
+    getSupportActionBar().setDisplayShowHomeEnabled(true);
+    getSupportActionBar().setDisplayUseLogoEnabled(true);
+
     getSupportActionBar().setTitle(R.string.app_name);
 
     initializeResources();