Git commits in Moodle 3.0.2 by David Monllao

commit 4d59af4afa0ceeb261afa0da24fb02325208eaa4
Author: David Monllao <davidm@moodle.com>
Date:   Tue, 05 Jan 2016 15:04:32 +0800
Tag:    v3.0.2

MDL-52503 mod_assign: Removing session cache


commit 09446474130691d351f24694c9769a6306223d22
Author: David Monllao <davidm@moodle.com>
Date:   Wed, 30 Dec 2015 14:47:45 +0800
Tag:    v3.0.2

MDL-52347 format_social: Replicate wait between new discussions


commit e8f73b9eddc7adf17b8479d82c134f02cc59a240
Author: David Monllao <davidm@moodle.com>
Date:   Tue, 29 Dec 2015 10:03:59 +0800
Tag:    v3.0.2

MDL-52597 mod_forum: Remove duplicated query


commit 145467fadf09ad71e1c2a52c7c493bfbbcfdeb6e
Author: David Monllao <davidm@moodle.com>
Date:   Mon, 21 Dec 2015 16:27:23 +0800
Tag:    v3.0.2

MDL-52226 tests: Fix behat phpunit naming conflict