Code cleanup

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal">

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

@@ -38,7 +38,7 @@
         android:layout_below="@id/title"
         android:textColor="#343434"
         android:textSize="30sp"
-        android:text="/"
+        android:text="@string/grade_separator"
         android:layout_toLeftOf="@id/grade_max"
         android:layout_toStartOf="@id/grade_max"
         android:layout_alignTop="@id/title" />