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....