Only check blocktype stuff if it is installed. This prevents the admin section from crashing out when you upgrade to 0.9

This will hopefully reduce the temptation to use easily guessable usernames
and passwords.

There are two files in /etc/mahara: config.debconf.php and config.php.  Both of these have symlinks in /var/www/mahara.

config.debconf.php is managed by debconf and is overwritten everytime the package is reconfigured.  It is not marked as a config file.

config.php includes config.debconf.php first in order to allow users to overwrite the debconf settings.  It is marked as a config file so that it's not overwritten automatically at configure time.

Changed all requires.
Also removed not used json/renderartefact.php

Rather than (the only example was artefact) lib/artefact.php which is non standard

Add support to the artefact chooser for a 'search' tab that allows drilling through the artefacts that can be chosen.

It works in firefox fine, and works without javascript fine (therefore it works in ie6). Opera also works. Konqueror and IE7 do not work properly.

Add a two character prefix to each log line, that remains the same over the lifetime of the request. This makes it easy to distinguish lines between requests that happen at the same time.

Broke rewriting one pagination link out into a separate method, so it can be used outside this class.

allow public views setting now prevents adding and using public views

changed stylesheet so initials table no longer has a width
=> letters no longer wrap

fixed the upgrade - I have just commented this out for now because I'm pretty sure that blocktypes install themselves separately, not as part of the artefacts

Still to do:

 - test real player filetypes (they'll need to be added to filetypes.xml and the language pack)
 - do some more mashing with width and height
 - test in more browsers
 - there are a couple TODOs in the lib.php

- serve_file now will allow overriding the mime type sent in content-type header
- you can also override the application/inline selector by setting force-download
- added swf to the filetypes.xml list and bumped the version.

made strings translatable

made two alerts for adding blog entries translatable

Conflicts:

	htdocs/lib/view.php