use correct node query to locate nodes in an environment (#219)

Author: drewhammond

ui/templates/environment.html

@@ -6,7 +6,7 @@ <h2 class="environment-headline">{{.environment.Name}}</h2>
 				<p class="lead">{{.environment.Description}}</p>
 			</div>
 			<div class="">
-				<a type="button" href="/ui/nodes?q=environment:{{.environment.Name}}" class="btn btn-outline-primary">View
+				<a type="button" href="/ui/nodes?q=chef_environment:{{.environment.Name}}" class="btn btn-outline-primary">View
 					Nodes</a>
 			</div>
 		</div>