Fix milo deployment

milo/frontend/appengine/templates/pages/settings.html

 {{define "title"}}Settings{{end}}
 
 {{ define "head" }}{{ end }}
 
 {{define "body"}}
 <div class="header">
   <a href="{{ .Navi.SiteTitle.URL }}">{{ .Navi.SiteTitle.Label }}</a>
 </div>
 <div class="content">
   <h1>Build {{ .Navi.PageTitle.Label }}</h1>
 
   <div class="column">
     <h2>Themes</h2>
     <form action="{{.Settings.ActionURL}}" method='POST'>
     <input type="hidden" name="xsrf_token" value="{{.XsrfToken}}">
     <select name="theme">
       {{ $selected := .Settings.Theme.Selected }}
       {{ range $index, $value := .Settings.Theme.Choices }}
         {{ if eq $value $selected }}
           <option value={{$value}} selected>{{$value}}</option>
         {{ else }}
           <option value={{$value}}>{{$value}}</option>
         {{ end }}
       {{ end }}
     </select>
     <button type="submit" label="Submit">Submit!!!</button>
   </div>
 </div>
 {{end}}