This reverts commit 14ccdac1cc1b4976d64cbdd8eb7dd3af2d72f68d.

Added a close button to the right of each help box. As clicking anywhere closes the help, this is only a visual metaphor. Added 'click anywhere to close' functionality to IE6, it did not work previously due to a race condition with two event handlers.

Implemented postgres upgrade to rename the community stuff to group. Will do the MySQL one at the end

Now, table names (and other identifiers that could be confused with SQL kewords), should be put into SQL like this:

SELECT * FROM {artefact}

The braces are matched and expanded by DML now to include the prefix and be properly quoted, which means that tables like 'view' and 'group' don't need renaming (and nor should they, there's little reason why we should rename tables to get around such constraints).

This has removed a whole bunch of $prefix = ... and get_config('dbprefix') stuff, which makes things a little simpler yet again.

Renaming communities to groups step 1: everywhere in the code. Filenames and database changes to come.

Upgrade to remove group tables from Mahara. They'll be back, as renamed community tables, but for now, farewell! *plays taps*

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.