Fixes #206: Visibility of Toolbar on devices with api levels 19 or below

Author: sashafierce

app/src/main/res/layout/main.xml

@@ -11,6 +11,11 @@
         android:layout_height="match_parent"
         android:fitsSystemWindows="true">
 
+        <FrameLayout
+            android:id="@+id/list_fragment_container"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
         <android.support.design.widget.AppBarLayout
             android:id="@+id/appBarLayout"
             android:layout_width="match_parent"
@@ -24,10 +29,7 @@
 
         </android.support.design.widget.AppBarLayout>
 
-        <FrameLayout
-            android:id="@+id/list_fragment_container"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent" />
+
 
         <com.zulip.android.util.SwipeRemoveLinearLayout
             android:id="@+id/messageBoxContainer"