Git commits in Moodle 2.2.1 by Andrew Davis

commit 223e7535206d6416191e38d947a4b9ed2f217495
Author: Andrew Davis <andrew@moodle.com>
Date:   Fri, 16 Dec 2011 10:40:39 +0800
Tag:    v2.2.1

MDL-20245 grade: increased the size of the user_preferences value column and added php validation of the data going into that column

commit 925d068de11ff9e480c63f60f6867f0e25662a03
Author: Andrew Davis <andrew@moodle.com>
Date:   Tue, 13 Dec 2011 15:53:15 +0800
Tag:    v2.2.1

MDL-13572 message: added validation of the email address in the messaging preferences

commit 1a35796fba8999ad0859ad533e1fef9bbf5b748d
Author: Andrew Davis <andrew@moodle.com>
Date:   Mon, 12 Dec 2011 15:57:04 +0800
Tag:    v2.2.1

MDL-25561 grade: made the student names clickable on the user report

commit 924deffba62a42c83f451137806b5be592b63908
Author: Andrew Davis <andrew@moodle.com>
Date:   Tue, 06 Dec 2011 11:09:14 +0800
Tag:    v2.2.1

MDL-30607 message: removed an if condition that prevented you from clearing an overrident email address

commit de276c92165cbe336b0f8410bdd3866a9dd2580c
Author: Andrew Davis <andrew@moodle.com>
Date:   Mon, 05 Dec 2011 14:57:36 +0800
Tag:    v2.2.1

MDL-28710 rating: added some more classes to the html for entering ratings

commit b11d6236dfd74eb6ec0dfd0cc08f29afcb59e7ab
Author: Andrew Davis <andrew@moodle.com>
Date:   Fri, 02 Dec 2011 09:48:36 +0800
Tag:    v2.2.1

MDL-26522 grade: made the user selection drop down on the user report behave more sensibly

commit aed70c6d40adca82f4124ebcb2c88d1386f3703b
Author: Andrew Davis <andrew@moodle.com>
Date:   Mon, 28 Nov 2011 12:58:44 +0800
Tag:    v2.2.1

MDL-27432 mod_data: improved handling of the absence of the GD php extension