anchor.diff:            <lor:csrf/>
             <input type="hidden" name="tagName" value="${tagName}">
             <span style="white-space: nowrap">${tagName}</span>
  -          <input type="submit" name="del" value="Удалить">
  +          <button type="submit" name="del" class="btn btn-default btn-small">Удалить</button>
           </form>
         </li>
       </c:forEach>
  
positive.code: <form action="<c:url value="/user-filter/favorite-tag"/>" method="POST">
    <lor:csrf/>
    <label>Тег: <input autocapitalize="off" data-tags-autocomplete="data-tags-autocomplete" type="text" name="tagName" id="newFavoriteTagName" size="20" maxlength="80" value="${fn:escapeXml(newFavoriteTagName)}"></label>
    <input type="submit" name="add" value="Добавить">
    <c:if test="${favoriteTagAddError != null}"><div class="error">
    <c:forEach var="tagAddError" items="${favoriteTagAddError}">
      ${tagAddError}<br />
  
negative.code:           <lor:csrf/>
            <input type="hidden" name="tagName" value="${tagName}">
            <span style="white-space: nowrap">${tagName}</span>
            <button type="submit" name="del" class="btn btn-default btn-small">Удалить</button>
          </form>
        </li>
      </c:forEach>
  