Git commits in Moodle 3.0.7 by Michael Aherne

commit 6ff83aa7e46f51189d3ef27df3d9748ea68fb3b5
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Fri, 04 Nov 2016 19:32:21 +0800
Tag:    v3.0.7

MDL-56755 assign: Improve documentation of assign::get_grade_item()


commit ce4ef5bd79164e1edbe7439f8cac4afda0e4ea66
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Fri, 07 Oct 2016 16:37:07 +0800
Tag:    v3.0.7

MDL-56319 blocks: Observe empty default blocks setting


commit 9fe421f29e3b5cd6baf214c32095518106f5c183
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Fri, 30 Sep 2016 21:49:46 +0800
Tag:    v3.0.7

MDL-56220 cache: Call static method correctly


commit 0822adfe49e55ab17c93394f8412a5ee0d5daaab
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Tue, 27 Sep 2016 19:25:06 +0800
Tag:    v3.0.7

MDL-56131 choice: Set maximum lifetime for lock