Minor formatting/refactoring

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

@@ -14,6 +14,7 @@
         tools:ignore="UnusedAttribute">
 
         <include layout="@layout/status_bar" />
+
     </FrameLayout>
 
     <android.support.design.widget.CoordinatorLayout
@@ -58,8 +59,8 @@
 
         </android.support.design.widget.AppBarLayout>
 
-        <FrameLayout android:id="@+id/container"
-            xmlns:android="http://schemas.android.com/apk/res/android"
+        <FrameLayout
+            android:id="@+id/container"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:layout_behavior="@string/appbar_scrolling_view_behavior">