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Raise memory limit to 128M. Mahara itself doesn't need it, it's all that annoying content users put in.
(cherry picked from commit 1c9dc4d4f7446e552cec394873fb5a7f14cadcdf)

on a view (i.e. permitting the public twice, allowing two time regions that overlap)

Now Mahara will actually crash and burn if the database isn't UTF8, rather than just bitching about it.

It's time we put an end to the madness.

(cherry picked from commit b9609391)

Reads in themeconfig.php for all themes. Allows the theme objects to set
their own fields if necessary.

The root theme is now 'raw', and this cannot be changed. All themes
extend from the raw theme.

A bunch of fields were added to do with the widths and colours of the
columns. Now, it's technically possible for a Mahara site to have
sideblocks on the left, or sideblocks on both sides, and the widths of
these columns can be set in pixels or percent.

Moodle outcomes integration: view submission/release to/from mnet hosts; hidden view access keys; export of additional artefacts with views

now each plugin can say whether it can be disabled or not. defaults to true

NEEDS TESTING!!!

The only places in Mahara that don't want this are upgrades, which I
changed as well.

You'd think this would never happen, but it can if a page is defined as PUBLIC and has the sideblock on it.

Throw SystemExceptions rather than Exceptions when files can't be found to be included in safe_require.

(cherry picked from commit 30438e42)

It's noisy because the edit profile page wants lots of helpfiles that haven't been written, and it's too close to a release to set about writing them.

In practice it would be more useful along with other debug lines that tell a translator that they need to translate certain help files.
(cherry picked from commit eaaea535)

Previously, get_helpfile_location would just look in $langroot/lang/$langname/... for the file, when it could be in $langroot/$plugintype/$plugintype/lang/$langname.

Spotted while testing David's previous patch.
(cherry picked from commit 07192741)

Allow language packs being installed outside the docroot. Fallback to
the English help file if the localized one is not found.
(cherry picked from commit 13e02387)

Small changes for fixes to (#3014) and (#3019) - exception handling for when curl is missing being the main one

Now they behave better, and respect the language pack search path. get_languages is cached.

Now the following locations are searched:

* docroot - the english language pack lives here
* directories in $dataroot/langpacks matching *.utf8
* anything on langpacksearchpaths

This makes $dataroot/langpacks the preferred place to install language packs, and makes langpacksearchpaths unnecessary for most people.

The upshot of all this is that it'll be much easier to install language packs - just download to $dataroot/langpacks and decompress :)

Thanks to discussion with David Mudrak, Nicolas Martignoni, I?aki Arenaza and others on the forums - http://mahara.org/interaction/forum/topic.php?id=120

Make it so that plugin location doesn't need a / after it when specifying a location to search for a pieform template.

This is done by providing a function that form writers need to call to get the template directory. This function scans through the theme directories following the inheritance chain. This allows templates to be overrideable by theme.

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).