Git commits in Moodle 2.9.0 by Paul Holden

commit 68ef378b1bc63dcc04174272fc4cb4df750b8dac
Author: Paul Holden <pholden@greenhead.ac.uk>
Date:   Thu, 13 Nov 2014 16:20:16 +0800
Tag:    v2.9.0-beta

MDL-44657 forms: Form identifiers should only contain basic characters