Button Extension - HTML in buttons text property

[yoshi-1]

Hi,
i suggest to change the default html escaping of the buttons text in the twig template, so that it's possible to use html tags for styling the text eg. with an icon like this:

$this->extensions->set(array(

       		'buttons' => array(
            	'create_buttons' => array(
                	array(
                    	'action' => array(
                        	'template' => ':post:action.js.twig',
                        	//'vars' => array('id' => '2', 'test' => 'new value'),
                    	),
                    	'text' => '<i class="fa fa-plus"></i> New',
                	),
            	),
       		),
        ));

[stephanvierkant]

You've created a pull request from your master branch, so this PR contains a commit from another one as well.

[yoshi-1]

You're right, my fault. I created a new PR #696
Thank you @stephanvierkant