ISAICP-9470: Add behat tests.

tests/features/solution/solution.member.feature

+@api @group-a
+Feature: Content Creation Permissions
+  As a group member,
+  I want to have content creation permissions based on the solution's settings,
+  So that I can add content when allowed.
+
+  Scenario Outline: Content creation availability based on solution settings
+    And solution content:
+      | title               | content creation   |
+      | ResolveTech Systems | <content creation> |
+
+    Given I am logged in as a member of the "ResolveTech Systems" solution
+    And I go to the "ResolveTech Systems" solution
+    Then I <expected> see the plus button menu
+
+    Examples:
+      | content creation         | expected   |
+      | registered users         | should     |
+      | facilitators and authors | should not |
+
+  @javascript
+  Scenario: A member can add a layout to new content
+    And solution content:
+      | title               | content creation |
+      | NexaFix Innovations | registered users |
+
+    Given I am logged in as a member of the "NexaFix Innovations" solution
+    And I go to the "NexaFix Innovations" solution
+    When I click "Add news" in the plus button menu
+    And I click "Add layout"
+    And a modal should open