fix(widget): make location optional

Fix #843

layouts/partials/widgets/experience.html

@@ -40,8 +40,8 @@
                 {{else}}
                   {{ i18n "present" | default "Present" }}
                 {{end}}
-                {{with .location}}
               </div>
+              {{with .location}}
               <div class="text-right">{{.}}</div>
               {{end}}
             </div>