bugfix: use chunk_split

lib.php

@@ -3148,8 +3148,9 @@ function facetoface_ical_escape($text, $converthtml=false) {
     );
 
     // Text should be wordwrapped at 75 octets, and there should be one whitespace after the newline that does the wrapping.
-    $text = wordwrap($text, 75, " \n ", true);
-
+    // Use chunk_split so that words are wrapped exactly at 75 characters as opposed to wordwrap function 
+    // that wraps at word bounaries.
+    $text = rtrim(chunk_split($text, 75, "\n "), "\n ");
     return $text;
 }