Add preference summary

app/src/main/res/values/strings.xml

@@ -370,6 +370,7 @@ File %1$s contained %2$s.\n\n
   <string name="no_title">(No title)</string>
   <string name="back_button_saves_task">Back button saves task</string>
   <string name="show_edit_screen_without_unlock">Show edit screen without unlock</string>
+  <string name="show_edit_screen_without_unlock_summary">Enables use of Quick Settings tile without unlocking device</string>
   <string name="default_list">Default list</string>
   <string name="default_tags">Default tags</string>
   <string name="default_recurrence">Default recurrence</string>

app/src/main/res/xml/preferences_task_edit.xml

@@ -39,6 +39,7 @@
         android:defaultValue="false"
         android:key="@string/p_show_edit_screen_without_unlock"
         android:title="@string/show_edit_screen_without_unlock"
+        android:summary="@string/show_edit_screen_without_unlock_summary"
         app:singleLineTitle="false" />
 
 </PreferenceScreen>