Added tests for the input filter.
Merge remote-tracking branch 'jonas/code-coverage' into code-coverage

Conflicts:
	test/EmailTemplatesTest/InputFilter/TemplateInputFilterTest.php
Renamed paramsUpdatedAt to parametersUpdatedAt and added @covers annotations to the template entity test class
Fixed a typo in the covers annotation
Added a unit test class for the email service
Added the composer.lock file
Updated the ci configuration