[IMP] account_statement_base: add possibility to navigate from statement lines to the

associated journal entry through a button. Adds also the journal entry number
as an optional field

account_statement_base/static/description/index.html

@@ -418,6 +418,10 @@ If you spotted it first, help us to smash it by providing a detailed and welcome
 <li>Sergio Teruel</li>
 </ul>
 </li>
+<li><a class="reference external" href="https://www.forgeflow.com">ForgeFlow</a>:<ul>
+<li>Jordi Ballester</li>
+</ul>
+</li>
 </ul>
 </div>
 <div class="section" id="maintainers">