Add the ability to setup OT&E from the web console

We create a new endpoint with a simple form that will let admins (including
support) setup OT&E for registrars.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=226570568

java/google/registry/ui/soy/registrar/AdminSettings.soy

@@ -27,7 +27,6 @@
           <label class="{css('setting-label')}">Allowed TLDs</label>
           <span class="{css('description')}">set or remove TLDs this
             client is allowed access to.</span>
-        </td>
         <td class="{css('setting')}">
           <div class="{css('info')} {css('summary')}">
             <div id="tlds">
@@ -44,8 +43,11 @@
                       class="{css('kd-button')} {css('btn-add')}">Add</button>
             </div>
           </div>
-        </td>
-
+      <tr class="{css('kd-settings-pane-section')}">
+        <td>
+          <label class="{css('setting-label')}">OT&amp;E setup page</label>
+        <td class="{css('setting')}">
+          <p>Generate new OT&amp;E accounts <a href="/registrar-ote-setup">here</a>
     </table>
   </form>
 {/template}