[IMP] add link to update personal data

easy_my_coop_website/views/subscription_template.xml

@@ -58,6 +58,11 @@
 						   <p style="color:red;"><t t-esc="error_msg"/></p>
 				           <input type="hidden" name="csrf_token" t-att-value="request.csrf_token()"/>
 				           
+				           <div t-attf-class="form-group">
+				              <a class='btn btn-primary' t-if="logged" t-attf-href="/my/account">You want to modify your personnal information ?</a>
+				              <br/>
+				           </div>
+				           					           
 				           <div t-attf-class="form-group">
 				              <a class='btn btn-primary' t-if="not logged" t-attf-href="/web/login?redirect=#{ request.httprequest.url }">You have already an account?</a>
 				              <br/>