Behat: [WIP] check visibility and access of tools

tests/behat/features/toolVisibilityInCourseAndSession.feature

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+Feature: Visibility of tools and appearance in a session context.
+  The visibility in the course imply a reaction in the session context. 
+  A tool set to visible in the course should be visible in the session context.
+  A tool set to invisible in the course should not be present in the session context with default configuration.
+
+  Background:
+    Given I am a platform administrator
+      
+  @javascript
+  Scenario: Create session visibility test
+    And I am on "/main/session/session_add.php"
+    When I fill in the following:
+      | name | SessionVisibilityTest |
+    And I fill in select2 input "#coach_username" with id "1" and value "admin"
+    And I press "submit"
+    Then I should see "Add courses to this session (SessionVisibilityTest)"
+    Then I fill in ajax select2 input "#courses" with id "1" and value "TEMP"
+    And I press "submit"
+    And wait very long for the page to be loaded
+    Then I should see "Update successful"
+    And I should see "Subscribe users to this session"
+    Then I fill in ajax select2 input "#users" with id "15" and value "fapple"
+    And I press "submit"
+    And wait very long for the page to be loaded
+    Then I should see "SessionVisibilityTest"
+    Then I should see "TEMP"
+    Then I should see "fapple"
+
+  Scenario: Document tool visible in course and in session
+    Given I am on course "TEMP" homepage
+#    Then I should see "mdi-eye" for the eye next to Documents
+#    Then I am on /course/1/home?sid=1&gid=0
+#    Then I should see "Documents"
+
+  Scenario: Document tool invisible in course and in session
+    Given I am on course "TEMP" homepage
+#    And the eye next to document is "mdi-eye"
+#    Then I click on the eye next to Documents
+#    Then I should see "mdi-eye-off" for the eye next to Documents
+#    Then I am on /course/1/home?sid=1&gid=0
+#    Then I should not see "Documents"
+
+# Those 2 cases can be repeated for every tool