MDL-34405 theme_formal_white: added background for quiz overview
MDL-34645: enrol_manual: enrolment init to pass default duration setting
MDL-34647: admintool: uploaduser enrolments now obey enrolperiod directive
MDL-28486 Force use of SSL for all youtube and vimeo embeds

If a page is served over SSL (https), then any content loaded from non-SSL
sources (e.g. http://youtube.com/) will cause errors to show in the
browser. To prevent this, it's best to use the SSL equivelants where they
exist (e.g. https://youtube.com/).

Unfortunately, it isn't possible to accurately determine whether the
current page is loaded over an SSL connection or not in Moodle.

Since including content from an external SSL site on a non-SSL moodle page
does not lead to browser warnings, but non-SSL external content on an SSL
moodle page does, we always use SSL where available.

Note: This does not lead to any additional processing requirements for the
moodle site.
MDL-34444 course: show section availability info

When available, rather than a capability error.
MDL-34444 course: Dont display links to hidden sections

This is what happens when you dont use the navigation api
MDL-34691 assign: Time remaining "Assignment is overdue" was incorrectly being displayed when a student viewed a submitted assignment after the due date.
MDL-33022 mod_form: set correct groupid when editing an existing post
MDL-31599 block_news - incorrect RSS feed for guest user

Was previously using the userid 0, rather than guest to use
authenticated RSS feed.

Thanks to Paul Verrall at LUNS for helping me debug this.
MDL-25983 enrol_imsenterprise Importing the course summary when adding new courses
MDL-34635 support multilang in self enrol course welcome message

Includes also new help string for the custom multilang placeholders by Helen Foster.
MDL-33942 Grading method: Marking Guide - check for $cm before using - may not exist if the course is being deleted.
MDL-34601 drop legacy wiki upgrade tables

Next time please keep db in sync with install.xml at all times.
MDL-34585 fix broken blog file access control
MDL-34705 role assignments list: should link to contexts.

This will make Admin's lives a bit easier.
MDL-34707 backup UI: only include the JS once.
MDL-28207 Course: Showing/hiding/marking a section respect capabilities
MDL-34259 Lesson: True/false questions don't break on missing answer
MDL-28531 Backup: Automated backups run when they are scheduled
MDL-30792 Files API: maxbytes will be set by get_max_upload_file_size if less then 0 or greater then max moodle limit