Add up/down arrow icons to sort menus By score asc/desc

android/uhabits-android/src/main/res/menu/list_habits.xml

@@ -64,10 +64,12 @@
 
                     <item
                         android:id="@+id/actionSortScore"
+                        android:icon="?iconDescending"
                         android:title="@string/by_score"/>
 
                     <item
                         android:id="@+id/actionSortScoreAsc"
+                        android:icon="?iconAscending"
                         android:title="@string/by_score_asc"/>
                 </menu>
             </item>

android/uhabits-android/src/main/res/values/attrs.xml

@@ -36,7 +36,9 @@
 
     <attr name="iconAdd" format="reference"/>
     <attr name="iconArchive" format="reference"/>
+    <attr name="iconAscending" format="reference"/>
     <attr name="iconChangeColor" format="reference"/>
+    <attr name="iconDescending" format="reference"/>
     <attr name="iconDownload" format="reference"/>
     <attr name="iconEdit" format="reference"/>
     <attr name="iconUnarchive" format="reference"/>

android/uhabits-android/src/main/res/values/styles.xml

@@ -52,7 +52,9 @@
 
         <item name="iconAdd">@drawable/ic_action_add_dark</item>
         <item name="iconArchive">@drawable/ic_action_archive_dark</item>
+        <item name="iconAscending">@drawable/ic_sort_ascending_light</item>
         <item name="iconEdit">@drawable/ic_action_edit_dark</item>
+        <item name="iconDescending">@drawable/ic_sort_descending_light</item>
         <item name="iconDownload">@drawable/ic_action_download_dark</item>
         <item name="iconUnarchive">@drawable/ic_action_unarchive_dark</item>
         <item name="iconChangeColor">@drawable/ic_action_color_dark</item>
@@ -106,7 +108,9 @@
 
         <item name="iconAdd">@drawable/ic_action_add_dark</item>
         <item name="iconArchive">@drawable/ic_action_archive_dark</item>
+        <item name="iconAscending">@drawable/ic_sort_ascending_dark</item>
         <item name="iconEdit">@drawable/ic_action_edit_dark</item>
+        <item name="iconDescending">@drawable/ic_sort_descending_dark</item>
         <item name="iconUnarchive">@drawable/ic_action_unarchive_dark</item>
         <item name="iconFilter">@drawable/ic_action_filter_dark</item>
         <item name="iconChangeColor">@drawable/ic_action_color_dark</item>