Developer credits
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