585 Fix deprecated Behat steps (#586)

Update Behat tests replacing steps deprecated by MDL-79029.

Author: leonstr

tests/behat/public_questionnaire.feature

@@ -38,15 +38,13 @@ Feature: Questionnaires can use an existing public survey to gather responses in
       | Yes | y |
       | Question Text | Enter a number |
 
-    And I am on "Course 2" course homepage with editing mode on
-    And I add a "Questionnaire" to section "1" and I fill the form with:
+    And I add a questionnaire activity to course "Course 2" section "1" and I fill the form with:
       | Name | Questionnaire instance 1 |
       | Description | Description |
       | Use public | Public questionnaire [Course 1] |
     Then I should see "Questionnaire instance 1"
 
-    And I am on "Course 3" course homepage with editing mode on
-    And I add a "Questionnaire" to section "1" and I fill the form with:
+    And I add a questionnaire activity to course "Course 3" section "1" and I fill the form with:
       | Name | Questionnaire instance 2 |
       | Description | Description |
       | Use public | Public questionnaire [Course 1] |

tests/behat/public_questionnaire_teacher.feature

@@ -41,17 +41,15 @@ Feature: Public questionnaires gather all instance responses in one master cours
     And I log out
 
     And I log in as "teacher2"
-    And I am on "Course 2" course homepage with editing mode on
-    And I add a "Questionnaire" to section "1" and I fill the form with:
+    And I add a questionnaire activity to course "Course 2" section "1" and I fill the form with:
       | Name | Questionnaire instance 1 |
       | Description | Description |
       | Use public | Public questionnaire [Course 1] |
     Then I should see "Questionnaire instance 1"
     And I log out
 
     And I log in as "teacher3"
-    And I am on "Course 3" course homepage with editing mode on
-    And I add a "Questionnaire" to section "1" and I fill the form with:
+    And I add a questionnaire activity to course "Course 3" section "1" and I fill the form with:
       | Name | Questionnaire instance 2 |
       | Description | Description |
       | Use public | Public questionnaire [Course 1] |

tests/behat/view_questionnaire.feature

@@ -70,15 +70,13 @@ Feature: Questionnaires can be public, private or template
     And I set the field "id_realm" to "public"
     And I press "Save and return to course"
 # Verify that a public questionnaire cannot be used in the same course.
-    And I am on "Course 1" course homepage with editing mode on
-    And I add a "Questionnaire" to section "1"
+    And I add a questionnaire activity to course "Course 1" section "1"
     And I expand all fieldsets
     Then I should see "(No public questionnaires.)"
     And I press "Cancel"
 # Verify that a public questionnaire can be used in a different course.
     And I am on site homepage
-    And I am on "Course 2" course homepage
-    And I add a "Questionnaire" to section "1"
+    And I add a questionnaire activity to course "Course 2" section "1"
     And I expand all fieldsets
     And I set the field "name" to "Questionnaire from public"
     And I click on "Test questionnaire [Course 1]" "radio"