jquery.ui.button.css
* Picked from jQuery UI 1.11.2-alpha instead of 1.9.2.
* Extra customizations.

jquery.ui.datepicker.css
* Add @noflip to prevent CSSJanus flipping.

jquery.ui.dialog.css
* Extra customizations.

jquery.ui.resizable.css
* Add @noflip to prevent CSSJanus flipping.

jquery.ui.theme.css
* Add @embed instructions for CSSMin.
* Change font-size from 1.0em to 0.8em.
* Join ".ui-icon", ".ui-widget-content .ui-icon" and ".ui-widget-header .ui-icon" rules
  to optimise image embedding.
* Removed ".ui-widget-content a { color: #362b36; }" and
  ".ui-widget-header a { color: #222222; }" due to bug T85857.

images:
* Add close.png and titlebar-fade.png (used in customizations for
  jquery.ui.dialog.css)
* Change chmod from 755 to 644.