Fix empty question title, answer or comment

qa-include/app/format.php

@@ -360,7 +360,7 @@
 
 	//	Post content
 
-		if (@$options['contentview'] && !empty($post['content'])) {
+		if (@$options['contentview'] && isset($post['content'])) {
 			$viewer=qa_load_viewer($post['content'], $post['format']);
 
 			$fields['content']=$viewer->get_html($post['content'], $post['format'], array(

qa-include/pages/admin/admin-default.php

@@ -250,6 +250,9 @@
 		'flagging_notify_first' => 1,
 		'max_num_q_tags' => 2,
 		'max_rate_ip_logins' => 1,
+		'min_len_a_content' => 1,
+		'min_len_c_content' => 1,
+		'min_len_q_title' => 1,
 		'page_size_activity' => 1,
 		'page_size_ask_check_qs' => 3,
 		'page_size_ask_tags' => 3,