MDL-45507 theme_bootstrapbase: Fix regression for theme based custom menu

in renderers/core_renderer.php.
MDL-45982: Implement displaying of non error messages from a provider.
MDL-40228 backup: Settings were ignored during automated backups
Automatically generated installer lang files
MDL-40805 auth_cas : Method postlogout_hook created to be executed after user_loggedout event trigger.
Automatically generated installer lang files
Automatically generated installer lang files
MDL-42467 mod_data: added code to delete cached RSS feeds when database or glossary entries are deleted
MDL-46080 assign: fix offline grading worksheet marker column
MDL-41663 Renderers - allow autoloaded renderers
MDL-41663 Output: Unit tests for output factories search paths
MDL-41663 Output: Allow subtype as a namespace level on it's own
MDL-43347 grades: consistent interface for drop lowest setting
MDL-46036 mod_survey: added logic to prevent user trying to download when there are no results
MDL-45889 behat: Allow admin config to set by shortname
Revert " MDL-45044 filter_tex: properly escape excutable pathnames for Windows"

This reverts commit f0da509835e3b8740c1693216a430dc3195cdb92.
Merge branch 'install_master' of https://git.in.moodle.com/amosbot/moodle-install
weekly release 2.8dev
MDL-43347 grades: convert keep highest to text field
MDL-46163 Question bank: Category selector renders as nested form