remove old workaround (trying to use debugging for logging) and fixed…

… some code

- proper Mockery integration into PHPUnit
- fix upload_course.php parameters to align with moodle standards
- fix tests sometimes configuring completionlib on course level wrong
- in tests: dynamically declaring class level variables is deprecated in more recent php versions -> fixing

.gitignore

@@ -3,4 +3,5 @@
 /.idea
 /old
 /vendor
-/composer.lock
+/composer.lock
+/.phpdoc