Author: sam marshall
MDL-31514 Lib: Time format to remove unwanted zeros caused errors on Windows servers
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d9498b3805876e2e85e1d2e558502d12a3f986c1
http://github.com/moodle/moodle/commit/d9498b3805876e2e85e1d2e558502d12a3f986c1
+ 2.3 en [strftimedatetime,core_langconfig]
+ 2.3 en [strftimedaydatetime,core_langconfig]
+ 2.3 en [strftimerecentfull,core_langconfig]
+ 2.3 en [strftimetime,core_langconfig]