Git commits in Moodle 2.8.6 by Tim Lock

commit 0ea62d56c4a5053011bc2bf3bdd6f1bd7cdc9504
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Thu, 03 Apr 2014 11:35:17 +0800
Tag:    v2.8.6

MDL-38210 report_participation: implement get view/post actions


commit 4101e04265f706aee9f7f562764e25b309c5b118
Author: Tim Lock <tim.lock@netspot.com.au>
Date:   Thu, 09 Jan 2014 07:38:41 +0800
Tag:    v2.8.6

MDL-36506 mod_book: Skip legacy files migration if missing a CM record