<buttontype="submit"class="button-longrunning"data-clicked-text="{% trans 'Uploading...' %}"><spanclass="icon icon-spinner"></span><em>{% trans 'Upload' %}</em></button>
<buttontype="submit"class="button button-longrunning"data-clicked-text="{% trans 'Uploading...' %}"><spanclass="icon icon-spinner"></span><em>{% trans 'Upload' %}</em></button>