Git commits in Moodle 2.2.1 by sam marshall

commit 1800b35bf686858a9624b6885077beae44fb1661
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Fri, 23 Dec 2011 02:12:11 +0800
Tag:    v2.2.1

MDL-30879 Course page: missing space after class for new 'description on course page' feature

commit 782b21dc0f57cfaa491b14743f73bc8efcfeafbc
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Fri, 16 Dec 2011 00:43:12 +0800
Tag:    v2.2.1

MDL-30764 Activity settings: do not disable grouping dropdown if it is already set

commit cff596e51bf1211d686665f640841df742af768d
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Thu, 08 Dec 2011 20:36:55 +0800
Tag:    v2.2.1

MDL-30655 Blocks: Moving block to top of list can cause (harmless) PHP warnings