Add link to feature report for draft forms

Author: lfdebrux

app/views/reports/index.html.erb

@@ -5,6 +5,7 @@
     <ul class="govuk-list">
       <li><%= govuk_link_to t("reports.add_another_answer.title"), report_add_another_answer_path %></li>
       <li><%= govuk_link_to t("reports.features.title", tag: "live"), report_features_path(tag: :live) %></li>
+      <li><%= govuk_link_to t("reports.features.title", tag: "draft"), report_features_path(tag: :draft) %></li>
       <li><%= govuk_link_to t("reports.features.long_list_usage.title"), report_selection_questions_summary_path %></li>
       <li><%= govuk_link_to t("reports.users.title"), report_users_path %></li>
       <li><%= govuk_link_to t("reports.last_signed_in_at.title"), report_last_signed_in_at_path %></li>