Updates Last Deployment column in environmnets list according to design

app/assets/stylesheets/pages/environments.scss

 .environments {
+  .deployment-column {
+    .avatar {
+      float: none;
+    }
+  }
 
   .commit-title {
     margin: 0;

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

@@ -4,10 +4,10 @@
   %td
     = link_to environment.name, namespace_project_environment_path(@project.namespace, @project, environment)
 
-  %td
+  %td.deployment-column
     - if last_deployment
+      %span ##{last_deployment.iid} by
       = user_avatar(user: last_deployment.user, size: 20)
-      %span ##{last_deployment.iid}
 
   %td
     - if last_deployment

app/views/projects/environments/index.html.haml

@@ -26,7 +26,7 @@
       %table.table.builds.environments
         %tbody
           %th Environment
-          %th Last Deployment ID
+          %th Last Deployment
           %th Commit
           %th
           %th