Reworked the sidebox implementation to depend less on the database and more

on XML config files...the implementation should now be much more customizable
and less klunky.  Added a provision for implementing "generic" (JSP-driven)
sideboxes.  Implemented the sidebox configure button on the front page
(finally!).  Implemented a random password generator class which will be used
in a future implementation of reminder-driven automatic forgotten-password
changing.  Fixed some minor funnies in SIG menu generation.

setup/database.sql

@@ -103,14 +103,6 @@ CREATE TABLE sideboxes (
     INDEX inorder (uid, sequence)
 );
 
-# A reference to the available sideboxes.
-CREATE TABLE refsidebox (
-    boxid INT NOT NULL PRIMARY KEY,
-    classname VARCHAR(255),
-    description VARCHAR(255),
-    param_descr VARCHAR(255)
-);
-
 # The contact information table.  This is used for both users and SIGs.
 CREATE TABLE contacts (
     contactid INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
@@ -489,12 +481,6 @@ INSERT INTO refaudit (type, descr) VALUES
     (315,     'Delete Conference'),
     (9999999, 'DUMMY');
 
-# Which side boxes are defined.  The class names MUST match implementations in the
-# com.silverwrist.venice.servlets.format package!!!
-INSERT INTO refsidebox (boxid, classname, description, param_descr) VALUES
-    (1, 'SideBoxSIGs',        'Your SIGs',               NULL),
-    (2, 'SideBoxConferences', 'Your Conference Hotlist', NULL);
-
 # The ISO 3166 two-letter country codes.  Source is
 # <http://www.din.de/gremien/nas/nabd/iso3166ma/>.
 INSERT INTO refcountry (code, name) VALUES