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Instead of selecting every row from the artefact table, only select the IDs. This will reduce the dataset retrieved dramatically.

Fixed PNG/GIF images losing their transparency when being uploaded. Also fixed the poor image quality of the resized images.

It turns out that every user is using the 'mahara' institution's internal auth plugin, despite the fact that if they're in a different institution they shouldn't be able to use it. Fix this by creating internal auth plugins for all institutions that need them, and fixing the 'authinstance' field of the usr table.

Don't try to add the message to the session if get_config doesn't exist (prevent boom on initial installation)

The blog security fixes were _too_ secure - you couldn't post any new blogs or posts at all\! Fixed now

Removed defaults from some fields that don't need them. Corrected whitespace at the end of the field declarations.

More database consistency fixes. Made sure many NOT NULL columns didn't unnecessariliy have a DEFAULT '' on them. Made sure the MySQL default isn't to make them DEFAULT '' either

REALLY corrected the name of the index PROPERLY. Geez I'm having a good day. You there, reading the commit message, how are you?