Tidy up PHP short tags.

Updates from skel (Daniel Piddock):

 - Fix undefined variable warnings
 - Comment out auto-scroll code since it doesn't really work
 - Fix some minor formatting problems

Also various other updates to the main page and comments.

Catch a lot of old URL's and update them. Also remove a couple of old files
that aren't used.

i-scream is now licensed under the GPL. I've added the GPL headers to every
source file, and put a full copy of the license in the appropriate places.
I think I've covered everything. This is going to be a mad commit ;)

Some of the changes to the small report affected the larger
reports.  A vdiff shows these changes nicely.

Fixed the "many reports on one line" problem.

$hideform is checked to see if it is not equal to "on" rather than seeing
if it is defined.

Modified the 'small' version of the alerts such that they may have the
font size altered (via the title.inc.php include value of $fontsize).
This is handy for public display applications.

Small versions of the alerts now link to large versions of the alerts for
that individual machine.  These large ones then provide links to the
latest data pages.

Graph of alert level is in the top left of each report area, with the
title on the top right.  The values associated with the report are now
centered in the table.

Added level graphs to the small reports pages.
These work quite nicely!

Added the "Final Warning" and a colour for it (dark blue).

Small versions of the reports now also have the alert level shown, and
also in the approprite colour

Different table arrangements are shown on individual and "all" reports if
&small=true is in the query string

When the list of ALL reports is being viewed, we now no longer try to go
through the directory listing if it is empty (as this causes an error
message to be echoed to the client)

Wrapped up each report in a dark-blue-headed table.  This makes it easier
to see each report.

If an alert directory exists, but is empty, the page now deals with it
nicely, rather than going through a foreach loop on something that is not
an array(!)

Altered the colour for the "Notice" alerts.
Got rid of some of the redundant diplay information.
After testing it out, it seems to work okay, but if there's time, it might
be worth sorting the list in alert level order.

Got more or less sensible things being read out for each alert now.

Put in some basic preg_matching to pull information out of each alert.