Merge branch 'add-application-properties-nonsensitive' into 'dev'

Adds non-sensitive application properties

See merge request !38

src/main/resources/application.properties

-test = test
+kafka.producer.bootstrap-servers=localhost:9092
+kafka.producer.acks=all
+kafka.consumer.bootstrap-servers=localhost:9092
+kafka.consumer.group-id=group_id
+kafka.topic.input=orders
+# Config for MailTrap SMTP Mail testing service
+spring.mail.protocol=smtp
+spring.mail.host=smtp.mailtrap.io
+spring.mail.port=2525
+spring.mail.username=945a9d376253be
+spring.mail.password=96d65f623868cc
+spring.mail.properties.mail.smtp.auth = true
+spring.mail.properties.mail.smtp.starttls.enable = true
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