adds development user dropdown when dev_login is enabled

views/layout.erb

@@ -76,7 +76,11 @@
   <main>
     <div class="container">
       <%= yield %>
+      <% if S.dev_login? %>
+        <%= erb :'partials/_development_users' %>
+      <% end %>
     </div>
+
   </main>
   <%= erb :'partials/_footer' %>
   <% @presenter.scripts.flatten.each do |script| %>

views/partials/_development_users.erb

@@ -0,0 +1,22 @@
+<% test_users=[ { label: "Ann Arbor User" , value: 'mlibrary.acct.testing1@gmail.com' }, { label: 'Flint User' ,
+  value: 'mlibrary.acct.testing2@gmail.com' }, { label: "Dearborn User" , value: 'mlibrary.acct.testing3@gmail.com' }, ]
+  %>
+
+  <m-callout subtle>
+    <h2>Design &amp; Development Options</h2>
+    <form method="get" action="/session_switcher" class="prose owl">
+      <label for="test-user">
+        Active user account:
+      </label>
+      <input type="text" list="users" id="test-user" name="uniqname" autocomplete="on"
+        value="<%=session[:uniqname] || "" %>">
+      <datalist id="users">
+        <% test_users.each do |user| %>
+          <option value="<%=user[:value]%>">
+            <%=user[:label]%>
+          </option>
+          <% end %>
+      </datalist>
+      <button>Save</button>
+    </form>
+  </m-callout>