Merge branch 'MDL-34945-23' of git://github.com/FMCorz/moodle into MOODLE_23_STABLE
Merge branch 'install_23_STABLE' of git://git.moodle.cz/moodle-install into MOODLE_23_STABLE
Automatically generated installer lang files
weekly release 2.3.1+
MDL-34338: renderer for mod_folder should not use file_info
MDL-35223 book: use chapter names in page titles
MDL-35007 book: Adding rule to parse links to book chapters from 1.9 backups

Conflicts:

	mod/book/version.php
MDL-34944 book: Implementing reset framework for book
MDL-33374 profile: Use correct text for buttons when creating a new user
MDL-27786 calendar: Changing the eventname string for accessibility
MDL-35257 lib: if $CFG->logguests is disabled, avoid some log actions

This is for performance, else there can be great contention on the guest
user record as we've seen on moodle.org.
MDL-10259 core Adding a search courses box if there are too many courses
MDL-35264 mod_chat Changing the input frame of chat daemon method to a embedded page layout
MDL-34068 mod_chat Sending text/html headers when sending the messages frame output for the first time
MDL-34765 Course: Re-sorting courses uses natural order
MDL-34984 admin setting: fixed labeling and shortname display for admin setting
MDL-34573 accessibility compliance for tag: Add forform input text and select tag
MDL-34573 Tag: update label for suggested tag
MDL-34573 - add label for search tag input text
MDL-29872 Dropbox repository: add message handler to filepicker header and add message to logout from dropbox.
When user clicked on logout button from dropbox repository, it will also logging them out from dropbox site through a popup window