Code cleanup

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

@@ -6,14 +6,14 @@
     android:orientation="vertical"
     tools:context="org.schabi.newpipe.MainActivity">
 
+    <include
+        android:id="@+id/settings_toolbar_layout"
+        layout="@layout/toolbar_layout" />
+
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/settings_fragment_holder"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_marginTop="?attr/actionBarSize" />
 
-    <include
-        layout="@layout/toolbar_layout"
-        android:id="@+id/settings_toolbar_layout"/>
-
 </RelativeLayout>

app/src/main/res/xml/update_settings.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:key="general_preferences"
     android:title="@string/settings_category_updates_title">
 
     <SwitchPreferenceCompat