Additionnal methods for Sitecore
			Adds the environment variable sitecore-editor to kafe based on the data attribute data-kafesitecore (true/false) on the html tag
Creates a toolbox for the Sitecore page editor. Allows the user to toggle unused placeholders to reflect a closer to reality result of the page.
Requires data attribute data-kafesitecore="true" on html tag when page-editor is active.
					Styles location : /vendor/ressources/cms.sitecore/editorToolbox.css
options[options]
											Object
											Optional
										Initial configurations.
[label = 'EditorToolbox']
														String
														Optional
													The label shown on the toolbox handle.
[onUpdate]
														Function
														Optional
													Callback that fires everytime the toolbox updates its component status.
// Initializing placeholders for the toolbox using data attributes
					<section data-kafesitecore-placeholder="sidebar-left" data-kafesitecore-displayname="Left column" data-kafesitecore-placeholder-opposite="sidebar-right">
					    <ul>
					        <li>This is the optional left column</li>
					        <li>data-kafesitecore-placeholder : *Required* The name of the placeholder defined in Sitecore, this attribute initiates the element has a placeholder for the toolbox.</li>
					        <li>data-kafesitecore-displayname : The label identifying the placeholder within the toolbox, defaults to the value of data-kafesitecore-placeholder if not set.</li>
					        <li>data-kafesitecore-placeholder-opposite : The data-kafesitecore-placeholder value of the opposite placeholder. Determines that the current placeholder should not be toggled if the opposite placeholder is active.</li>
					   </ul>
					</section>
					// Initializing the toolbox
					kafe.cms.sitecore.editorToolbox({
					    label:"My Toolbox",
					    onUpdate:function(data){
					        console.log('There are ' + data.placeholders.filter(':visible').length + ' visible in the page');
					    }
					});