Add support for login intercept messages and announcements

app/models/system/Announcement.model.js

@@ -66,6 +66,8 @@ class AnnouncementModel extends Model {
             await this.populate_emails()
         } else if ( this.type === 'banner' ) {
             await this.populate_banners()
+        } else if ( this.type === 'login' ) {
+            await this.populate_logins()
         }
     }
 
@@ -92,6 +94,14 @@ class AnnouncementModel extends Model {
             await Message.create(user, `${this.title} - ${this.message}`)
         }
     }
+
+    async populate_logins() {
+        const users = await this.all_users()
+        const LoginMessage = this.models.get('LoginMessage')
+        for ( const user of users ) {
+            await LoginMessage.create(user, this.title, this.message)
+        }
+    }
 }
 
 module.exports = exports = AnnouncementModel