[FIX] Avoid JS error when no tracking info (#92)

mail_tracking/__openerp__.py

@@ -5,7 +5,7 @@
 {
     "name": "Email tracking",
     "summary": "Email tracking system for all mails sent",
-    "version": "8.0.2.0.1",
+    "version": "8.0.2.0.2",
     "category": "Social Network",
     "website": "http://www.tecnativa.com",
     "author": "Tecnativa, "

mail_tracking/static/src/js/mail_tracking.js

@@ -30,7 +30,6 @@
                         'title': _t("Message tracking"),
                     };
                     instance.webclient.action_manager.do_push_state(state);
-                    console.log('tracking_email_id = ' + tracking_email_id);
                     var action = {
                         type:'ir.actions.act_window',
                         view_type: 'form',

mail_tracking/static/src/xml/mail_tracking.xml

@@ -42,7 +42,7 @@
 
 <t t-extend="mail.thread.message">
     <t t-jquery="span[t-attf-class='oe_partner_follower']" t-operation="append">
-        <t t-set='tracking' t-value='widget.partner_trackings[partner[0]]'/>
+        <t t-set="tracking" t-value="widget.partner_trackings[partner[0]] || ['unknown']"/>
         <t t-if="tracking[1]">
             <span class="mail_tracking oe_mail_action_tracking"
                   t-att-data-tracking="tracking[1]"