Demos: o-section-head deprecated

<div class="o-section-head" data-o-component="o-section-head">
	<div class="o-section-head__inner">
		<div class="o-section-head__container">
			<div class="o-section-head__title-container">
				<h1 class="o-section-head__title">Section title</h1>
			</div>
		  <div class="o-section-head__nav-item-container o-expander" data-o-expander-collapsed-toggle-text="RELATED" data-o-expander-expanded-toggle-text="RELATED" data-o-expander-shrink-to="height" data-o-component="o-expander">
					<button class="o-expander__toggle o--if-js o-section-head__nav-item-toggler">RELATED</button>
					<nav class="o-section-head__nav-item-list o-expander__content">
		        <a class="o-section-head__nav-item" href="#">item 1</a>
		        <a class="o-section-head__nav-item" href="#">item 2</a>
		        <a class="o-section-head__nav-item" href="#">item 3</a>
		        <a class="o-section-head__nav-item" href="#">item 4</a>
		        <a class="o-section-head__nav-item" href="#">item 5</a>
		        <a class="o-section-head__nav-item" href="#">item 6</a>
		        <a class="o-section-head__nav-item" href="#">item 7</a>
					</nav>
		    </div>
		  </div>
		</div>
	</div>