[ctxcomponents] RQLCtxComponent: refactor init_rendering/render_body to ease overriding init_rendering now simply execute the query to get result set to be displayed, and store it in .cw_rset attribute. Links to be displayed by default are now computed in render_body. So you may now simply customise what to be displayed by overriding render_body.

$(document).ready(function() {
    $('a.rhythm').click(function (event){
        $('div#pageContent').toggleClass('rhythm_bg');
        $('div#page').toggleClass('rhythm_bg');
        event.preventDefault();
    });
});