MDL-39871 Blocks,Themes: Swap block regions in RTL mode (using pre-defined array)
MDL-41311 tool_generator: remove legacy code

There was some functionality to generate data here, but it was not
maintained, dangerous and being monkeypatched over time.
MDL-41772 - mod_data: Fixed database_module comments not being restored.
MDL-41087 Backup: add progress tracking in slow steps

Adds calls to the new backup progress tracking API within various steps of the
backup system - previously it only tracked progress between steps, but some steps
can themselves be slow. This ensures the system displays progress (either by
moving the progress bar if possible, or by making the wibbler below it pulsate)
during nearly all of the backup process.
MDL-40550 badges: Change wording of badge activation message

Add confirmation check when activating badge from management page
MDL-41716 atto - Fix resizing inconsistencies between editor modes
MDL-41733 auth_cas: Allow direct authentication with CAS to a course when multiple authentication is activated
MDL-41669 Restore: Progress bar needs to include more tasks

1. Changes progress bar code to allow headings for progress bar (so users have
   some clue what's going on if a page has more than one progress bar).
2. Changes restore code so that a progress bar can display during pre-checks if
   they take longer than 5 seconds.
3. Changes pre-check and restore code so that, in various points where the system
   can take a long time within an individual step, intederminate progress is
   indicated and it won't time out.
MDL-41833 feedback: Fix setType() warning when deleting a response in feedback
MDL-41840 Restore: Page title, breadcrumbs show incorrect stage

Unfortunately it isn't possible to display the current stage before
printing header any more, because we need to be able to show a
progress bar while doing the code that considers whether or not
priunt stage. So this change removes stage information from page
title. It is still present (in bold) in the strip that shows where
you are within the restore/import.

This display was inconsistent anyway; change makes it consistent
between Restore and Import.
MDL-41591 removed some unnecessary z-indexes from css
MDL-41725 move db tables from quiz stats report

to question bank

- move cron to clean up old cache records move code and
rename classes
- further review of the quiz reports statistics code
- starting to separate calculations of quiz stats, question stats and
response analysis
- introduce hashcode db field for cached stats convert
- code to use qubaids hashcode for caches

We just drop the old tables (including previous upgrade steps) and
re-create the new ones, because these tables just cache calculated
statistics. No important data is stored in them.
MDL-39910 mod_scorm: rewrite SCORM code in YUI3, use responsive grids, add new nav setting; squashing commits
MDL-41787 make sure maturity constants are defined before they are used in core_component class
MDL-41904 import Markdown lib 1.3
MDL-41903 import typo3 4.7.15
MDL-41208 import YUI 3.12.0 with @VERSION@ fix for simpleyui
MDL-37324 import phpmailer 5.2.7
MDL-31501 rework user session architecture

List of changes:
 * New OOP API using PHP namespace \core\session\.
 * All handlers now update the sessions table consistently.
 * Experimental DB session support in Oracle.
 * Full support for session file handler (filesystem locking required).
 * New option for alternative session directory.
 * Official memcached session handler support.
 * Workaround for memcached version with non-functional gc.
 * Improved security - forced session id regeneration.
 * Improved compatibility with recent PHP releases.
 * Fixed borked CSS during install in debug mode.
 * Switched to file based sessions in new installs.
 * DB session setting disappears if DB does not support sessions.
 * DB session setting disappears if session handler specified in config.php.
 * Fast purging of sessions used in request only.
 * No legacy distinction -  file, database and memcached support the same functionality.
 * Session handler name included in performance info.
 * Fixed user_loggedin and user_loggedout event triggering.
 * Other minor bugfixing and improvements.
 * Fixed database session segfault if MUC disposed before $DB.

Limitations:
 * Session access time is now updated right after session start.
 * Support for $CFG->sessionlockloggedinonly was removed.
 * First request does not update userid in sessions table.
 * The timeouts may break badly if server hosting forces PHP.ini session settings.
 * The session GC is a lot slower, we do not rely on external session timeouts.
 * There cannot be any hooks triggered at the session write time.
 * File and memcached handlers do not support session lock acquire timeouts.
 * Some low level PHP session functions can not be used directly in Moodle code.
MDL-35217 theme_afterburner: reduce size of sideblocks in Afterburner and make into fully responsive design.

Squashed commit of the following:

commit 8871ed6a5ca3f3ecbf6d9c20ebe5a9badcfe0fef
Author: Mary Evans <lazydaisy@visible-expression.co.uk>
Date:   Sun Sep 22 14:57:18 2013 +0100

    MDL-35217 theme_afterburner: Added styles to block and course page editing icons.

    Adjusted @media styles in syyle/responsive.css.

commit 6ee5035b77f4e6fb10fc14b4d18e70ab5b8cb174
Author: Mary Evans <lazydaisy@visible-expression.co.uk>
Date:   Mon Sep 16 02:09:01 2013 +0100

    MDL-35217 theme_afterbuener: Fix for first docked block top-margin reduced to zero.

commit fc6a3fbf9267d778b8f85af0c73f6628890ccbc4
Author: Mary Evans <lazydaisy@visible-expression.co.uk>
Date:   Mon Sep 16 01:23:21 2013 +0100

    MDL-35217_M26 theme_afterburner: Improvment to make Afterburner fully responsive.

    This commit builds on the work already commited by Richard Olemann.

commit f7a750a90d40d60e965485b2a3fcb112b5e2bd80
Author: roelmann <oelmann.richard@gmail.com>
Date:   Thu Sep 12 15:55:46 2013 +0100

    wip-MDL_35217-afterburner: Reduce sidebar widths, make layout responsive, hide logo on small screens