(bug 454) Merge e-notif 2.00

(bug 454) Merge e-notif 2.00
From http://bugzilla.wikipedia.org/attachment.cgi?id=171&action=view
and extra files from http://www.tgries.de/mw/cvs15+enea200-minus-cvs.tgz

Undid a couple minor bits like the broken changing of minoreditletter.
Have not yet made general corrections/reworkings. Since this changes
the user and watchlist tables, you must run the updaters (installer or
update.php) on an existing database.