MDL-46826 forum: add index on field forum_discussion.course
MDL-46589 scheduled task does not send emails

Thanks to  Luděk Šulák  for the patch
MDL-41284 stats: fix sql query from MDL-41284
MDL-46760 mod_scorm: Fix js error when preview mode disabled
MDL-45887 mod_scorm : Fixing coding standard violations
MDL-45887 mod_scorm : Fixing variable names
MDL-45887 mod_scorm: Note the coding style fixup issue in upgrade.txt
MDL-46669 mod_scorm: Extraneous quotes added to scorm API values
Merge branch 'master_MDL-46669' of https://github.com/danmarsden/moodle
MDL-46766 auth_cas: Upgrading to phpCAS 1.3.3
Merge branch 'wip-MDL-46545-master' of git://github.com/marinaglancy/moodle
Merge branch 'wip-MDL-46589-master' of git://github.com/marinaglancy/moodle
Merge branch 'wip-MDL-46826-master' of git://github.com/marinaglancy/moodle