Replace model attribute in ir.cron view with model_id.

data/board_alerts_cron_task.xml

@@ -10,7 +10,7 @@
             <field name="function">send_board_alerts</field>
             <field name="interval_number">1</field>
             <field name="interval_type">days</field>
-            <field name="model">res.users</field>
+            <field name="model_id" ref="model_res_users"/>
             <field name="name">Board alerts - Daily emails</field>
             <field name="nextcall"
                 eval="time.strftime('%Y-%m-%d 07:00:00', time.localtime(time.time() + 24 * 3600))" />

static/src/js/alert_board.js

+// TODO migration: Implementation in odoo 11 js changed. FIX IT
 /* Alert board. */
 
 /* Taken from the default "My board" dashboard.