Git commits in Moodle 3.3.0 by Davo Smith

commit a2f1c5c39a2e3432464d470971032b2dd3c95691
Author: Davo Smith <git@davosmith.co.uk>
Date:   Tue, 24 Jan 2017 17:54:32 +0800
Tag:    v3.3.0-beta

MDL-57752 session: fix check_security() session termination


commit cd698c8bafd919efa84b7d970f0325ca13387d21
Author: Davo Smith <git@davosmith.co.uk>
Date:   Mon, 23 Jan 2017 21:32:59 +0800
Tag:    v3.3.0-beta

MDL-57638 block_rss_client: warn users about failed RSS feeds


commit 83e5234536519081b958ec7c518d6edb641dc250
Author: Davo Smith <git@davosmith.co.uk>
Date:   Fri, 20 Jan 2017 00:58:20 +0800
Tag:    v3.3.0-beta

MDL-57638 block_rss_client: skip output of failed feeds


commit 255d3aaaed1f1d1c3c8c8abe112e44b054667cad
Author: Davo Smith <git@davosmith.co.uk>
Date:   Thu, 05 Jan 2017 23:30:09 +0800
Tag:    v3.3.0-beta

MDL-56449 mod_assign: fix formatting of group warnings


commit c6dd683cd01d6b75c46cf93fca0a53bc2a3dba4a
Author: Davo Smith <git@davosmith.co.uk>
Date:   Fri, 16 Dec 2016 19:42:13 +0800
Tag:    v3.3.0-beta

MDL-47354 gradereport_singleview: allow choice of 'perpage' values


commit e7f3fd59d48fd3b6a33e640e7ce1cb1b53dd4b85
Author: Davo Smith <git@davosmith.co.uk>
Date:   Tue, 06 Dec 2016 21:03:01 +0800
Tag:    v3.3.0-beta

MDL-56449 mod_assign: fuller description of group submission problems


commit 46045db2bda087e1c55a28730e0d1b8b15639c9e
Author: Davo Smith <git@davosmith.co.uk>
Date:   Tue, 06 Dec 2016 19:50:50 +0800
Tag:    v3.3.0-beta

MDL-55461 atto_equation: allow inserting inside empty brackets


commit fda954f4703c916b2b432a007a15d3cac730d47e
Author: Davo Smith <git@davosmith.co.uk>
Date:   Thu, 16 Oct 2014 19:52:31 +0800
Tag:    v3.3.0-beta

MDL-47198 filelib: fix curl handling headers with no value