This commit improves the test PagesTest::testItUnsubscribes() but adding
a segment to the subscriber and making sure that the status of the
SubscriberSegmentEntity changes when Pages::unsubscribe() is called.
Before this change, the test was not covering this part of the execution
path of the tested code.
[MAILPOET-4020]
This commit replaces the old Paris models Newsletter, NewsletterOption and
NewsletterOptionField with the correspondent Doctrine entities.
[MAILPOET-4020]
This commit adds an integration test to check that unconfirmed data is persisted
when Pages::confirm() is called and the subscriber has some unconfirmed
data set. Before there was no test covering this part of the code.
[MAILPOET-4020]
