MDL-44486 core: Rewrite JavaScript progressbar
MDL-44620 behat: Automates MDLQA-6

- MDLQA-6: By default, a new course contains a news
forum in which only teachers can post and subscription
is forced
MDL-44620 behat: Automate MDLQA-7

- MDLQA-7: By default, a new course contains a Latest
News block which displays a specific number of recent
discussions from the news forum
MDL-40371 Upgrade-until-22: remove obsolete _upgrade_grades functions
MDL-45333 output: navbar is now wrapped in a <nav> tag
Merge branch 'master_MDL-40371' of git://github.com/danmarsden/moodle

Conflicts:
	mod/scorm/lib.php
Merge branch '45333-28' of git://github.com/samhemelryk/moodle
Merge branch 'MDL-44620_master' of git://github.com/dmonllao/moodle
Merge branch 'MDL-44486-master' of git://github.com/andrewnicols/moodle

Conflicts:
	theme/bootstrapbase/style/moodle.css