Revert "[Main] Hide finder menu"

This reverts commit cebd993d.

app/src/main/res/menu/activity_main_actions.xml

@@ -28,7 +28,6 @@
     <item
         android:id="@+id/action_finder"
         android:icon="@drawable/ic_search"
-        android:visible="false"
         android:title="@string/finder_title" />
 
     <item