Git commits in Moodle 2.7.1 by Andrew Davis

commit 083d5a6f0ca125c3ae2af0f4233da838f89a0589
Author: Andrew Davis <andrew@moodle.com>
Date:   Tue, 24 Jun 2014 11:53:34 +0800
Tag:    v2.7.1

MDL-46036 mod_survey: added logic to prevent user trying to download when there are no results

commit 0a9815d14e0f39e0a486dd522adc5c9761023b5d
Author: Andrew Davis <andrew@moodle.com>
Date:   Fri, 20 Jun 2014 12:58:48 +0800
Tag:    v2.7.1

MDL-42467 mod_data: added code to delete cached RSS feeds when database or glossary entries are deleted

commit deaddfb6b82ea92ec735f1156fc4834fcefc2c4a
Author: Andrew Davis <andrew@moodle.com>
Date:   Thu, 19 Jun 2014 11:32:37 +0800
Tag:    v2.7.1

MDL-46035 mod_survey: a string change to make an error message always correct