Show emtpy state if now feature flags exist

app/views/projects/feature_flags/_list.html.haml

@@ -4,16 +4,21 @@
     .badge.badge-pill
       = @feature_flags.count
   %ul.content-list.pages-domain-list
-    - @feature_flags.each do |feature_flag|
-      %li.pages-domain-list-item.unstyled
-        = feature_flag.name
+    - if @feature_flags.empty?
+      %li
+        .nothing-here-block
+          = s_('FeatureFlags|No feature flags found.')
+    - else
+      - @feature_flags.each do |feature_flag|
+        %li.pages-domain-list-item.unstyled
+          = feature_flag.name
 
-        %div.controls.d-none.d-md-block
-          = link_to 'Edit', edit_project_feature_flag_path(@project, feature_flag), class: "btn btn-sm btn-grouped"
-          = link_to 'Remove', project_feature_flag_path(@project, feature_flag), data: { confirm: 'Are you sure?'}, method: :delete, class: "btn btn-remove btn-sm btn-grouped"
+          %div.controls.d-none.d-md-block
+            = link_to 'Edit', edit_project_feature_flag_path(@project, feature_flag), class: "btn btn-sm btn-grouped"
+            = link_to 'Remove', project_feature_flag_path(@project, feature_flag), data: { confirm: 'Are you sure?'}, method: :delete, class: "btn btn-remove btn-sm btn-grouped"
 
-        %p
-          - if feature_flag.active?
-            %span.badge.badge-success Enabled
-          - else
-            %span.badge.badge-danger Disabled
\ No newline at end of file
+          %p
+            - if feature_flag.active?
+              %span.badge.badge-success Enabled
+            - else
+              %span.badge.badge-danger Disabled
\ No newline at end of file