changed the label button to match with the label button used in the edit.php.twig
bug #274 changed the label button to match with the label button used in the edit.php.twig (DanFerreira)

This PR was merged into the 2.3.x-dev branch.

Discussion
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changed the label button to match with the label button used in the edit.php.twig

Changed the label button to 'Update' to match with the label button generated by the edit.php.twig class.

The test class search by a button 'Edit', but the name generated by twig skeleton is 'Update'.

Commits
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3e8b048 changed the label button to match with the label button used in the edit.php.twig