Fix bug using twb-row-open and column-size options inside a form without fieldset

[alejandro-fiore]

If i have the following entity (it's simplify)

class Entity {

    protected $name;

    /**
     * @Form\Options({
     *      "twb-row-open"  : true,
     *      "column-size"   : "md-4"
     * })
     */
    protected $start;

    /**
     * @Form\Options({
     *      "column-size"   : "md-4"
     * })
     *
     */
    protected $end;

    /**
     * @Form\Options({
     *      "twb-row-close" : true,
     *      "column-size"   : "md-4"
     * })
     */
    protected $count;

    protected $type;
}

The form rendered is (it's simplify)

<form>
    <div class="row">
        <div class="form-group">
              <label>Name</label>
              <input name="name" class="form-control" value="" type="text">
        </div>
        <div class="form-group  col-md-4">
              <label>Start</label>
              <input name="start" class="form-control" value="" type="date">
          </div>
          ....
    </div>
</form>

With the fix, now it's rendering like this:

<form>
    <div class="form-group">
             <label>Name</label>
             <input name="name" class="form-control" value="" type="text">
    </div>
    <div class="row">
        <div class="form-group  col-md-4">
                <label>Start</label>
                <input name="start" class="form-control" value="" type="date">
          </div>
          ....
    </div>
      ....
</form>

[neilime]

Please fix the broken phpunit tests