redmine/app/views/issues/_action_menu.html.erb

<div class="contextual">
<%= link_to l(:button_edit), edit_issue_path(@issue),
            :onclick => 'showAndScrollTo("update", "issue_notes"); return false;',
            :class => 'icon icon-edit', :accesskey => accesskey(:edit) if @issue.editable? %>
<%= link_to l(:button_log_time), new_issue_time_entry_path(@issue),
            :class => 'icon icon-time-add' if User.current.allowed_to?(:log_time, @project) %>
<%= watcher_link(@issue, User.current) %>
<%= link_to l(:button_copy), project_copy_issue_path(@project, @issue),
            :class => 'icon icon-copy' if User.current.allowed_to?(:copy_issues, @project) && Issue.allowed_target_projects.any? %>
<%= actions_dropdown do %>
  <%= copy_object_url_link(issue_url(@issue, only_path: false)) %>
  <%= link_to l(:button_delete_object, object_name: l(:label_issue).downcase), issue_path(@issue),
              :data => {:confirm => issues_destroy_confirmation_message(@issue)},
              :method => :delete, :class => 'icon icon-del' if @issue.deletable? %>
<% end %>
</div>