erpnext/utilities/page/messages/messages.html

<div class="layout-wrapper layout-wrapper-background">
	<div class="layout-main-section">
		<a class="close" onclick="window.history.back();">&times;</a>		
		<h1>Messages</h1>
		<div class="well">
			<input id="message-post-text"></input>
			<button disabled="disabled" id="message-post" class="btn btn-small"><i class="icon-play"></i> Post</button>
		</div>
		<div id="message-list">
		</div>
	</div>
	<div class="layout-side-section">
		<div class="psidebar">
			<div class="section">
				<div class="section-head">
					Messages By
				</div>
				<div class="section-body">
					<div class="section-item">
						<a href="#!messages"><b>All messages</b></a>
					</div>
				</div>
			</div>
		</div>
	</div>
	<div style="clear: both;">
	</div>	
</div>