<nav>
	<ul>
		<%= nav_item 'Browse & Vote', "/assets/book_dark.svg", links_path %>		
		<%= nav_item 'Learn More', "/assets/bulb_dark.svg", help_path %>
		<% if current_user.try(:admin?) %>
				<%= nav_item 'Top Ideas', admin_contents_path %>
				<%= nav_item 'Previous Posts', admin_posts_path %>
				<%= nav_item 'Notices', admin_notices_path %>
			<% end %>
	</ul>
</nav>

<nav>
	<ul>
		<%= nav_item 'Browse & Vote', "/assets/book_dark.svg", links_path %>
		<%= nav_item 'Learn More', "/assets/bulb_dark.svg", help_path %>
		<% if current_user.try(:admin?) %>
				<%= nav_item 'Top Ideas', nil, admin_contents_path %>
				<%= nav_item 'Previous Posts', nil, admin_posts_path %>
				<%= nav_item 'Notices', nil, admin_notices_path %>
			<% end %>
	</ul>
</nav>

Fix calls to nav_item for admin items
Fix calls to nav_item for admin items
