Behat step to allow delete buttons on rows to be clicked and alert accepted

[Robert Lyon]

This way we can access the delete button via the visible text (eg title) of a row and accept the confirm popup.

All row delete buttons should have a confirm option for safety reasons

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/5024

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/5024
Committed: https://git.nzoss.org.nz/mahara/mahara/commit/425a14511fe3db76a3d030d4f7d180fc248a25bd
Submitter: Son Nguyen (<email address hidden>)
Branch: master

commit 425a14511fe3db76a3d030d4f7d180fc248a25bd
Author: Robert Lyon <email address hidden>
Date: Thu Jul 30 17:09:30 2015 +1200

New Behat option: "And I delete the [text string] row" (Bug #1479631)

This test should find the delete button within a row and click it

Note: delete buttons should have a confirm popup on them

Change-Id: I99c2b1154b154b63676c1d08bd5c82da1c73e308
Signed-off-by: Robert Lyon <email address hidden>