anchor.diff:                                              <spring:message code='settings.mail.port'/>:
                                           </label>
                                           <div class="col-md-8">
  -                                            <form:input id="mailSettings.port" path="mailSettings.port" class="form-control"
  +                                            <form:input id="mailSettings.port" path="mailSettings.port"
  +                                                        class="form-control"
                                                           cssErrorClass="form-control error"/>
                                               <span class="help-inline"><form:errors path="mailSettings.port"
                                                                                      cssClass="error"/></span>
  
positive.code:                                             <spring:message code='settings.mail.from'/>:
                                          </label>
                                          <div class="col-md-8">
                                              <form:input id="mailSettings.from" path="mailSettings.from" class="form-control"
                                                          cssErrorClass="form-control error" type="email"/>
                                              <span class="help-inline"><form:errors path="mailSettings.from"
                                                                                     cssClass="error"/></span>
  
negative.code:                                         <form:input id="calendarSettings.workDayBeginHour"
                                                      path="calendarSettings.workDayBeginHour" class="form-control"
                                                      cssErrorClass="form-control error"
                                                      type="number" step="1"/>
                                          <span class="help-inline"><form:errors path="calendarSettings.workDayBeginHour"
                                                                                 cssClass="error"/></span>
                                      </div>
  