Add location note to jobs page

LMS Lighthouse [#190]

lms/templates/static_templates/jobs.html

@@ -48,11 +48,12 @@
             <li>A great working experience where everyone cares and wants to change the world (no, we’re not kidding)</li>
           </ul>
           <p>While we appreciate every applicant&rsquo;s interest, only those under consideration will be contacted. We regret that phone calls will not be accepted.  Equal opportunity employer.</p>
+          <p>All positions are located in our Cambridge offices.</p>
         </div>
       </article>
 
 
-      <!-- Template        
+      <!-- Template
            <article id="SOME-JOB" class="job">
              <div class="inner-wrapper">
                <h3><strong>TITLE</strong></h3>