Custom Validation needs to validate again to show changed message

[lquintana]

If i set a message on error event, the custom needs to validate again to show update the bubble content

[lean8086]

this.bubble.show isn't updating the content when the Bubble is shown, so use content instead:

ch.Validation.prototype._showErrorMessage = function (message) {
        this.bubble.show(message);
        this.$trigger.attr('aria-label', 'ch-' + this.bubble.name + '-' + this.bubble.uid);

        return this;
};