Adds link to close environment in a merge request

app/assets/stylesheets/pages/merge_requests.scss

@@ -177,6 +177,15 @@
   .ci-coverage {
     float: right;
   }
+  
+  .close-env-container {
+    color: $gl-text-color;
+    float: right;
+    
+    a {
+      color: $gl-text-color;
+    }
+  }
 }
 
 .mr_source_commit,

app/views/projects/merge_requests/widget/_heading.html.haml

@@ -57,3 +57,6 @@
           - if external_url
             = link_to external_url, target: '_blank' do
               = icon('external-link', text: "View on #{external_url.gsub(/\A.*?:\/\//, '')}", right: true)
+        %span.close-env-container
+          = link_to '#', class: 'close-evn-link' do
+            = icon('stop-circle-o', text: 'Stop environment')
\ No newline at end of file