templates: don't emit tags for empty URLs, allow both web_url & webscm_url

Rather than always outputting one of web_url or webscm_url, only output
when these are present. This prevents us from emitting empty links if
both are missing.

Signed-off-by: Jeremy Kerr <[email protected]>
Acked-by: Stephen Finucane <[email protected]>

Author: jk-ozlabs

patchwork/templates/patchwork/projects.html

@@ -30,7 +30,8 @@ <h3>{{p.name}}</h3>
         </p>
 {% if p.web_url %}
       <p><a href="{{p.web_url}}">{{p.web_url}}</a></p>
-{% else %}
+{% endif %}
+{% if p.webscm_url %}
       <p><a href="{{p.webscm_url}}">{{p.webscm_url}}</a></p>
 {% endif %}
      </div>