Fossil HR: allow for assign no function to a button

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

@@ -519,6 +519,7 @@
     <string name="devicetype_xwatch">XWatch</string>
     <string name="choose_auto_export_location">Speicherort für Export auswählen</string>
     <string name="notification_channel_name">Allgemein</string>
+    <string name="menuitem_nothing">Nichts</string>
     <string name="menuitem_status">Status</string>
     <string name="menuitem_activity">Trainingsverlauf</string>
     <string name="menuitem_weather">Wetter</string>

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

@@ -1687,6 +1687,7 @@
     </string-array>
 
     <string-array name="pref_hybridhr_buttonfunctions">
+        <item name="">@string/menuitem_nothing</item>
         <item name="notificationsPanelApp">@string/menuitem_notifications</item>
         <item name="weatherApp">@string/menuitem_weather</item>
         <item name="musicApp">@string/menuitem_music</item>
@@ -1697,6 +1698,7 @@
         <item name="workoutApp">@string/hr_appname_workout</item>
     </string-array>
     <string-array name="pref_hybridhr_buttonfunctions_values">
+        <item></item>
         <item>notificationsPanelApp</item>
         <item>weatherApp</item>
         <item>musicApp</item>

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

@@ -949,6 +949,7 @@
     <string name="devicetype_sg2">Lemfo SG2</string>
     <string name="devicetype_lefun">Lefun</string>
     <!-- Menus on the smart device -->
+    <string name="menuitem_nothing">Nothing</string>
     <string name="menuitem_status">Status</string>
     <string name="menuitem_notifications">Notifications</string>
     <string name="menuitem_activity">Workout History</string>