file: /src/view/assets/core/styles/common/jquery-ui.css
changes:
1) .ui-button-icon-only .ui-icon -> changed properties "top" and "left" from 50% to 0;
2) .ui-widget -> removed properties "font-family" and "font-size"
3) .ui-widget button -> removed properties "font-family" and "font-size"
4) .ui-widget-content a -> removed property "color"