Don't link to self from element version pages

app/views/browse/_common_details.html.erb

@@ -1,6 +1,6 @@
 <h4>
   <%= t "browse.version" %>
-  #<%= link_to common_details.version, :controller => "old_#{@type.pluralize}", :action => :show, :version => common_details.version %>
+  #<%= link_to_unless_current common_details.version, :controller => "old_#{@type.pluralize}", :action => :show, :version => common_details.version %>
 </h4>
 
 <p class="fst-italic">

test/controllers/old_nodes_controller_test.rb

@@ -14,6 +14,9 @@ class OldNodesControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
     assert_template "old_nodes/show"
     assert_template :layout => "map"
+    assert_select "h4", /^Version/ do
+      assert_select "a[href='#{old_node_path node, 1}']", :count => 0
+    end
   end
 
   def test_not_found

test/controllers/old_relations_controller_test.rb

@@ -14,6 +14,9 @@ class OldRelationsControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
     assert_template "old_relations/show"
     assert_template :layout => "map"
+    assert_select "h4", /^Version/ do
+      assert_select "a[href='#{old_relation_path relation, 1}']", :count => 0
+    end
   end
 
   def test_visible_with_members

test/controllers/old_ways_controller_test.rb

@@ -14,6 +14,9 @@ class OldWaysControllerTest < ActionDispatch::IntegrationTest
     assert_response :success
     assert_template "old_ways/show"
     assert_template :layout => "map"
+    assert_select "h4", /^Version/ do
+      assert_select "a[href='#{old_way_path way, 1}']", :count => 0
+    end
   end
 
   def test_visible_with_shared_nodes