Replace all the addslashes with parameterised queries, and attempt to spot anywhere else that failed to escape queries properly

Removing the SUCS Blogs system and Planet. Security flaws, not used, old code. http://lists.sucs.org/pipermail/devel/2015-January/000103.html

Add a script that checks a username and password combination to see if it's a valid sucs or uni ldap account

The old server appears to have disappeared, so
the query has been updated to make authenticated
requests against the new server.

Port the printer shame script from the old site, rearrange the disk shame script (and rename it)
Also includes fixes made to the site during freshers week that haven't been committed yet

Apologies for the deluge of tiny commits. It's late and I'm incompetent.

Moved the commit button to the top of the list in a tfoot tag so that it appears even when there are errors

add a new function to save a message flash in the session data to be displayed on the next page load (e.g. when we're doing post/redirect/get)