fix for email content horizontal overflow (#2164)

frappe/public/js/frappe/form/footer/timeline_item.html

@@ -77,7 +77,7 @@
 						<span class="likes-count text-muted">{{ (data._liked_by || []).length }}</span>
 					</span>
                 </div>
-				<div class="reply">
+				<div class="reply" style="overflow-x:scroll">
         			<div>
         				{%= data.content_html %}
         			</div>