Styling integration with jQueryUI

[Pilskalns]

Class to menu items are being added more friendly for styling (for other calls to add class)

[Pilskalns]

Now everyone can use jQueryUI styling (if want to).

Here is sample from project I use it:

element.contextMenu('contextMenu',{ 'Rediģēt': { click: clickFirstItem, klass: "menu-edit", icon: "ui-icon-pencil" }, 'Dzēst': { click: clickFirstItem, klass: "menu-delete" } },{ jqui: true });

P.S. Sorry for so many edits. I contribute for first time here....