{% set renderBackButton = flow.getCurrentStep() in 2 .. flow.getMaxSteps() %}
{# Since bootstrap relies on jQuery or Ender, we can use a Js to make Enter intercept the next button
append class="bootstrap_formflow" to your form: #}
<div class="actions">
	<button type="submit" id="reset" class="btn" name="{{ flow.getFormTransitionKey() }}" value="reset" formnovalidate="formnovalidate">
		{{- 'button.reset' | trans({}, 'CraueFormFlowBundle') -}}
	</button>
	<button type="submit" id="back" name="{{ flow.getFormTransitionKey() }}" value="back" formnovalidate="formnovalidate" class="btn{% if not renderBackButton %} disabled{% endif %}"{% if not renderBackButton %} disabled="disabled"{% endif %}>
		{{- 'button.back' | trans({}, 'CraueFormFlowBundle') -}}
	</button>
	<button type="submit" id="next" class="btn primary">
		{%- if flow.getCurrentStep() < flow.getMaxSteps() -%}
			{{- 'button.next' | trans({}, 'CraueFormFlowBundle') -}}
		{%- else -%}
			{{- 'button.finish' | trans({}, 'CraueFormFlowBundle') -}}
		{%- endif -%}
	</button>
</div>

<script type="text/javascript">
$(function() {  
    $(function() {
        $("form{{ formident|default('') }} input").keypress(function (e) {
            if ((e.which && e.which == 13) || (e.keyCode && e.keyCode == 13)) {
                $('button[type=submit].primary').click();
                return false;
            } else {
                return true;
            }
        });
    });
});
</script>