Converting to a bigint is way overkill, but I'mna blame XMLDB for that.

Conflicts:

	htdocs/lib/version.php

(cherry picked from commit 4bb025de)

Conflicts:

	htdocs/lib/version.php

Turns out my original query was dumb, though perfectly legal SQL. MySQL
couldn't handle the 'dumb' which is kinda surprising but there you go.

copied by everyone.

It now is ordered a bit more sensibly. Improved help and description
text on the page. Added a button to allow admins to delete users.
Improved the suspension/unsuspension process.

Add function raise_memory_limit from Moodle, and use it to raise Mahara's default working memory to 32M.

This comes after a few complaints that certain RSS feeds would cause the View editor to die. Noticed by Derrin, mjmontagne and myself (on biobrio).

Triggered, guess when - when a use joins a group!

The UI for this still needs to be implemented.

This also adds a database column to store the setting.

Whether this setting is even settable is controled by the site setting added in the previous commit.

Changes to each group file to make them visible to the public are coming in the next commit.

The process of copying profile views takes ages. Furthermore, the View
class appears to have some memory leaks that mean the upgrade soon runs
out of memory (tested on a ~2000 user site, the 64M limit is reached
reasonably soon).

After this, the upgrade finishes in a few seconds, rather than waiting
over a minute before dying (on test site).

There is a configuration parameter that sets how often this field is updated. This prevents DB writes every page load, though this behaviour can be achieved by setting the parameter to 0 if necessary.

Haven't tested SSO updating it yet.

- can_view_view needs http://paste.dollyfish.net.nz/0e6800 (see comment
  in function)
- blocktype/mygroups/lib.php is BROKEN (was using get_associated_groups
  which I guess has been removed. needs updating! I commented out a line
  to stop it fataling in the meantime.

Up the length of the username column to 100 characters, so it fits in "deleted" information on top of the 30 character limit enforced at the application level.
(cherry picked from commit e2319031)

still to do:

- cron processing is completely untested
- i would like to split out the import table based on the transport:
  import_queue.host and token should go into a import_queue_mnet table
- it's possibly worth thinking about making import a proper plugin type.
  not sure about the effect this has on the import transport
  framework...  it might be possible to have both import and
  import transport plugintypes but that might be too heavy
- at the very least if we split out import_queue.host and token into an
  mnet table it will pave the way for a better refactor laterz.
- i would still really like to improve the mnet namespacing but that
  might be plausible at this point.
- need to write docs about arguments and return types
- i want to change the content_ready arguments to not include
  $filesmanifest as that is dependent on format being file - it may
  be actually better to dispatch somewhere else based on $format and
  then just have a generic $data which would be $filesmanifest for files
  and then something else for something like LEAP or maharanative or
  whatever, as this is checked in the importer, not not the
  importertransport.

note that there's an fk in here to host.wwwroot (which is the primary
key)

I would like to rejig the primary key of the host table to be numberic,
as wwwroot can change, and a primary key should definitely not change,
but this will have to be laterz