change logging of some troublesome or noisy bits so we can figure out what is really going on

include/items.php

@@ -4285,7 +4285,7 @@ function zot_feed($uid,$observer_xchan,$arr) {
 		$mindate = NULL_DATE;
 	$mindate = dbesc($mindate);
 
-	logger('zot_feed: ' . $uid);
+	logger('zot_feed: requested for uid ' . $uid . ' from observer ' . $observer_xchan, LOGGER_DEBUG);
 
 	if(! perm_is_allowed($uid,$observer_xchan,'view_stream')) {
 		logger('zot_feed: permission denied.');