MDL-43266 Testing sites are cleaning all test dataroot contents
MDL-44299 resolve collision with session_gc() in PHP 5.6
MDL-43266 testing: Removing duplicated keys
MDL-30085 bump version
Merge branch 'wip-mdl-44458' of https://github.com/rajeshtaneja/moodle
Merge branch 'wip-MDL-44337-master' of git://github.com/marinaglancy/moodle
Merge branch 'MDL-44095' of https://github.com/shashirepo/moodle
MDL-43967 logging: references to the migrating dev docs
Merge branch 'MDL-40913_master' of https://github.com/markn86/moodle
Merge branch 'MDL-33653' of git://github.com/timhunt/moodle
Merge branch 'MDL-44534' of git://github.com/timhunt/moodle

Conflicts:
	question/tests/behat/copy_questions.feature
Merge branch 'MDL-44478-master' of git://github.com/andrewnicols/moodle
Merge branch 'MDL-41173' of https://github.com/danielneis/moodle
Merge branch 'MDL-44345-master' of git://github.com/FMCorz/moodle
Merge branch 'mdl27_mdl-43497_allow_force_language_02' of https://github.com/brki/moodle
Merge branch 'MDL-42368-master' of git://github.com/danpoltawski/moodle
Merge branch 'wip-MDL-32699-master' of git://github.com/marinaglancy/moodle
Merge branch 'MDL-40699-UI-language-changes-when-logging-out-of-Moodle' of git://github.com/michael-milette/moodle
Merge branch 'MDL-44061-master' of git://github.com/andrewnicols/moodle
Merge branch 'master_MDL-37733' of git://github.com/danmarsden/moodle