Fixes & code style changes

www/libs/gettext.php

@@ -244,7 +244,7 @@ class gettext_reader
 			if ($cmp == 0) {
 				// string is exactly in the middle => return it
 				return $half;
-			} else if ($cmp < 0) {
+			} elseif ($cmp < 0) {
 				// The string is in the upper half
 				return $this->find_string($string, $start, $half);
 			} else {