Merge branch 'static-method' into 'master'

avoid fatal error when calling non-static method statically

See merge request !9

CRM/Eventics/Utils/Helper.php

@@ -10,7 +10,7 @@ class CRM_Eventics_Utils_Helper {
    *
    * Based on https://zaclee.net/php/formatting-google-calendar-links-with-timezones-and-php-carbon
    */
-  function generateGoogleCalendarLink($title, $begin, $end, $location, $details, $timezone) {
+  public static function generateGoogleCalendarLink($title, $begin, $end, $location, $details, $timezone) {
     $queryString = sprintf(
       'action=%s&text=%s&details=%s&location=%s&dates=%s/%s&ctz=%s',
       // action