Merge branch 'w51_MDL-37301_m23_coursecatinfoas' of git://github.com/skodak/moodle into MOODLE_23_STABLE
Merge branch 'MDL-36456-23' of git://github.com/FMCorz/moodle into MOODLE_23_STABLE
MDL-35130 shibboleth: remove hard-coded string
Merge branch 'MDL-31641_drag_drop_help_23' of git://github.com/davosmith/moodle into MOODLE_23_STABLE
MDL-29835: filemanager - zero means zero, not unlimited

The form_filemanager constructor was using empty() rather than !isset(),
so overwrote maxfiles=0 with the default (-1).  In addition, the JS UI
treated 0 as unlimited - but the non-JS fallback UI treated it as zero.
This would result in a file manager which allowed files to be
chosen/uploaded, which would then vanish into the void when the backend
saw that the maximum number of files was 0.
Merge branch 'w51_MDL-37191_m23_plugindelete' of git://github.com/skodak/moodle into MOODLE_23_STABLE
MDL-36335 - course: Orphaned activities no longer show a notice.
MDL-36335 - course: Orphaned activities no longer show a notice.
MDL-36620 - Blog, RSS - Preventing Guests from viewing the RSS of site level blogs

Conflicts:
	blog/rsslib.php
MDL-xxxx show appropriate instance status on user enrolments page
Merge branch 'MDL-32639-23' of git://github.com/FMCorz/moodle into MOODLE_23_STABLE
MDL-37173 Stop attempting to set User-Agent from core JS

This leads to some browsers throwing warnings that it is unsafe to set the
User-Agent. It doesn't help us in any way particularly either.
MDL-37194 activity chooser displays entire list of default activities/resources
MDL-37395 Add .jar filetype so Moodle doesn't incorrectly call it a zip file
MDL-37420 add support for more PostgreSQL schemas
Merge branch 'w51_MDL-37152_m23_smtp' of git://github.com/skodak/moodle into MOODLE_23_STABLE
MDL-36600 user: improve course messaging checks
MDL-37162: Use CSS to make mod show/hide icons not look "clickable" in hidden sections

Previously, the resource toolbox initialiser was using JS to find the show/hide icon, then find its section ancestor, then check if the section was hidden - only to pointlessly set pointer:auto if it was.  That didn't meet the aim stated in the comments ("Disable" show/hide icons (change cursor to not look clickable) if section is hidden), but this patch meets that goal with a single CSS rule.
Merge branch 'w51_MDL-37420_m23_pgschema' of git://github.com/skodak/moodle into MOODLE_23_STABLE
Merge branch 'wip-MDL-36367-s23' of git://github.com/phalacee/moodle into MOODLE_23_STABLE