Adds external url partial for vue component

app/views/projects/environments/components/_environment.html.haml

@@ -48,7 +48,7 @@
     
     %td.hidden-xs
       .pull-right{ "v-if" => "!isFolder"}
-        actions will go here
+        =render "projects/environments/components/external_url"
       
   %tr{"v-if" => "open && isFolder", 
     "is" => "environment-item", 

app/views/projects/environments/components/_external_url.html.haml

+%a.btn.external-url{ "v-if" => "!isFolder && model.external_url", 
+  ":target" => "_blank", 
+  ":href" => "model.external_url"}
+  = icon("external-link")
\ No newline at end of file