Git commits in Moodle 2.1.7 by Andrew Robert Nicols

commit 9dde62c4e838e8053ded2175846407bd3a0614c7
Author: Andrew Robert Nicols <andrew.nicols@luns.net.uk>
Date:   Thu, 24 May 2012 16:42:28 +0800
Tag:    v2.1.7

MDL-33040 Validate dates correctly on log page

commit 1da1b025927ef5ad3458d1ded005b4a277a7cac9
Author: Andrew Robert Nicols <andrew.nicols@luns.net.uk>
Date:   Tue, 22 May 2012 18:24:24 +0800
Tag:    v2.1.7

MDL-33186 Ensure that the comment textarea exists before toggling it

commit 2fe83e04d9d3a890b696156879960162bc32ddcb
Author: Andrew Robert Nicols <andrew.nicols@luns.net.uk>
Date:   Thu, 10 May 2012 00:34:12 +0800
Tag:    v2.1.7

MDL-32340 Improve performance of calendar selection