Git commits in Moodle 3.6.x by Ilya Tregubov

commit 40b81687d6570ab26d4a1ec827e323bfc98e3a00
Author: Ilya Tregubov <ilyatregubov@catalyst-au.net>
Date:   Mon, 17 Jun 2019 13:37:32 +0800
Tag:    v3.6.6

MDL-65925 assign: Grade page broken if submission was deleted.

commit f7c13d399639b549da0c37933391c8dcd9f1f5ad
Author: Ilya Tregubov <ilyatregubov@catalyst-au.net>
Date:   Wed, 03 Apr 2019 13:47:52 +0800
Tag:    v3.6.5

MDL-65249 Session: Throw exception if number of attempts exceeded.

commit a6b98fe71643263dbc44c57c435f7ac13968dee0
Author: Ilya Tregubov <ilyatregubov@catalyst-au.net>
Date:   Wed, 19 Dec 2018 10:21:04 +0800
Tag:    v3.6.4

MDL-64439 auth: Refresh $cm in require_login after pre_loginpage_hook.

commit 3b9f40920a7a73d8ae72c8d63c0363f8133382a4
Author: Ilya Tregubov <ilyatregubov@catalyst-au.net>
Date:   Thu, 06 Dec 2018 09:35:47 +0800
Tag:    v3.6.2

MDL-63710 repository: Delete orphaned file records.