Git merges in Moodle 3.5.6 by Sara Arjona

commit fdecf60babb1515c158579618c889e77628e4fdc
Author: Sara Arjona <sara@moodle.com>
Date:   Mon, 06 May 2019 18:09:48 +0800
Tag:    v3.5.6

Merge branch 'MDL-65374-35' of https://github.com/lucaboesch/moodle into MOODLE_35_STABLE

commit bb1cfe25cf4885724ff79d25bdaa015e00d68d47
Author: Sara Arjona <sara@moodle.com>
Date:   Mon, 06 May 2019 16:20:15 +0800
Tag:    v3.5.6

Merge branch 'MDL-65396-35' of https://github.com/lucaboesch/moodle into MOODLE_35_STABLE

commit b7f0a3fd9c9acb5a6f9475462b9aa4498ec6d2d4
Author: Sara Arjona <sara@moodle.com>
Date:   Wed, 24 Apr 2019 15:02:54 +0800
Tag:    v3.5.6

Merge branch 'MDL-65170-35' of https://github.com/snake/moodle into MOODLE_35_STABLE

commit 0a91d215c688867aa6e56a8b36c0dcf8a64579f9
Author: Sara Arjona <sara@moodle.com>
Date:   Mon, 08 Apr 2019 20:20:03 +0800
Tag:    v3.5.6

Merge branch 'MDL-64819-35' of git://github.com/damyon/moodle into MOODLE_35_STABLE

commit 0eff5b77650f387f3e91a5ba11c005079027f7cc
Author: Sara Arjona <sara@moodle.com>
Date:   Tue, 26 Mar 2019 01:20:22 +0800
Tag:    v3.5.6

Merge branch 'MDL-64615-35' of git://github.com/jleyva/moodle into MOODLE_35_STABLE

commit fd0b3123031d2c34a0f5bb90383092cf43cb63e1
Author: Sara Arjona <sara@moodle.com>
Date:   Mon, 25 Mar 2019 19:38:19 +0800
Tag:    v3.5.6

Merge branch 'MDL-64790-35_apidoc_fix' of https://github.com/nicoroeser/moodle into MOODLE_35_STABLE