Behat test: Sending multiple messages (Bug 1426983)

This is a converted selenium test, and it works but I added one step to the end to check for error messages becuase they are appearing. So that's why it will fail.

Change-Id: I5858676c0c97eec186f7d7be8faacd7030dc17a8
Signed-off-by: Jinelle Foley-Barnes <jinelleb@catalyst.net.nz>

test/behat/features/send_multiple_messages.feature

+@javascript @core core_mesages
+Feature: Send messages to other users
+   In order to send a message to another user
+   As an admin I need to create an user
+   So I can send it messages
+
+
+Scenario: Sending messages between user and admin (Bug 1426983)
+    # Log in as "Admin" user
+    Given I log in as "admin" with password "Password1"
+    # Verifying log in was successful
+    And I should see "Admin User"
+    # Creating user 1
+    And I follow "Administration"
+    And I choose "Add user" in "Users"
+    And I fill in the following:
+   | firstname   | Bob  |
+   | lastname    | bobby    |
+   | email       | bob@example.com |
+   | username    | bob  |
+   | password    | mahara1  |
+   And I press "Create user"
+   When I follow "Return to site"
+   # Sending message 1
+   And I choose "Find friends" in "Groups"
+   And I follow "Bob"
+   And I follow "Send message"
+   And I fill in the following:
+   | Subject   | Hi there |
+   | Message   | This is a test message   |
+   And I press "Send message"
+   # Sending message 2
+   And I choose "Find friends" in "Groups"
+   And I follow "Bob"
+   And I follow "Send message"
+   And I fill in the following:
+   | Subject   | Hi there2 |
+   | Message   | This is a test message2   |
+   And I press "Send message"
+   # Sending message 3
+   And I choose "Find friends" in "Groups"
+   And I follow "Bob"
+   And I follow "Send message"
+   And I fill in the following:
+   | Subject   | Hi there3 |
+   | Message   | This is a test message3   |
+   And I press "Send message"
+   # Log out as "Admin" user
+   And I follow "Logout"
+   # Log in as user 1
+   Then I log in as "bob" with password "mahara1"
+   And I fill in the following:
+    | New password   | mahara2   |
+    | Confirm password  | mahara2   |
+    And I press "Submit"
+    # Verifying password was changed successfully
+    And I should see "Your new password has been saved"
+    # Confirming all messages has been received
+    And I follow "Inbox"
+    And I should see "Hi there"
+    And I should see "Hi there2"
+    And I should see "Hi there3"
+    And I should not see "Call stack"