Git commits in Moodle 1.9.13 by Andrew Davis (andyjdavis)

commit ab0c861479c5effcc5325ecd5e171e6b4f62e149
Author: Andrew Davis (andyjdavis) <andrew@moodle.com>
Date:   Tue, 07 Jun 2011 17:06:00 +0800
Tag:    v1.9.13

MDL-24355 tag: added code to prevent an error if there are no tag correlations found


commit b66705e52c33f5cdfa07712a852a23c1c3aaa7be
Author: Andrew Davis (andyjdavis) <andrew@moodle.com>
Date:   Fri, 06 May 2011 16:15:49 +0800
Tag:    v1.9.13

MDL-26704 gradebook: added some intelligence to the dates displayed on the user outline activity report


commit a1bc21b045255d06e891e5631c7d4c6e8bfae39f
Author: Andrew Davis (andyjdavis) <andrew@moodle.com>
Date:   Fri, 06 May 2011 11:10:01 +0800
Tag:    v1.9.13

Revert "MDL-26704 gradebook: switched the user outline activity report to use date submitted instead of date graded"


commit e9cd73e2f383c3b29fb9bb4d0c110075c716a725
Author: Andrew Davis (andyjdavis) <andrew@moodle.com>
Date:   Fri, 06 May 2011 11:08:07 +0800
Tag:    v1.9.13

MDL-26704 gradebook: switched the user outline activity report to use date submitted instead of date graded