Tests: try another method to create test users (add them through a scenario)

tests/features/bootstrap/FeatureContext.php

@@ -47,19 +47,6 @@ class FeatureContext extends MinkContext
             new Given('I press "submitAuth"')
         );
     }
-    /**
-     * @BeforeSuite
-     */
-    public static function prepare(SuiteEvent $event)
-    {
-        // This action, launched before the suite is run, connects as an admin
-        // and moves to the users filler page to create about 30 new users with
-        // all the possible roles
-        return array(
-            new Given('I am a platform administrator'),
-            new Given('I am on "/main/admin/filler.php?fill=users"')
-        );
-    }
     /**
      * @Given /^I am a session administrator$/
      */

tests/features/login.feature

@@ -9,6 +9,11 @@ Feature: User login
     Given I am a platform administrator
     Then I should not see an ".alert-danger" element
 
+  Scenario: Create tests users successfully
+    Given I am a platform administrator
+    And I am on "/main/admin/filler.php?fill=users"
+    Then I should not see an ".alert-danger" element
+
   Scenario: Login as student user successfully
     Given I am a student
     Then I should not see an ".alert-danger" element