Reinitialize the website toward a baseline install

gazelle.sql

   `TorrentID` int(10) unsigned NOT NULL DEFAULT '0',
   `TimeFilled` datetime,
   `Visible` binary(1) NOT NULL DEFAULT '1',
-  `GroupID` int(10) DEFAULT NULL,
+  `GroupID` int(10) DEFAULT '0',
   PRIMARY KEY (`ID`),
   KEY `Userid` (`UserID`),
   KEY `Name` (`Title`),
 
 CREATE TABLE `torrents` (
   `ID` int(10) NOT NULL AUTO_INCREMENT,
-  `GroupID` int(10) NOT NULL DEFAULT NULL,
+  `GroupID` int(10) NOT NULL DEFAULT '0',
   `UserID` int(10) DEFAULT NULL,
   `Media` varchar(20) DEFAULT NULL,
   `Container` varchar(20) DEFAULT NULL,
   `Censored` tinyint(1) NOT NULL DEFAULT '1',
   `Anonymous` tinyint(1) NOT NULL DEFAULT '0',
   `info_hash` blob NOT NULL,
-  `FileCount` int(6) NOT NULL DEFAULT NULL,
+  `FileCount` int(6) NOT NULL DEFAULT '0',
   `FileList` mediumtext,
   `FilePath` varchar(255) NOT NULL DEFAULT '',
-  `Size` bigint(12) NOT NULL DEFAULT NULL,
+  `Size` bigint(12) NOT NULL DEFAULT '0',
   `Leechers` int(6) NOT NULL DEFAULT '0',
   `Seeders` int(6) NOT NULL DEFAULT '0',
   `last_action` datetime,
   `downspeed` int(10) unsigned NOT NULL DEFAULT '0',
   `corrupt` bigint(20) NOT NULL DEFAULT '0',
   `timespent` int(10) unsigned NOT NULL,
-  `useragent` varchar(51) NOT NULL DEFAULT NULL,
+  `useragent` varchar(51) NOT NULL DEFAULT '',
   `connectable` tinyint(4) NOT NULL DEFAULT '1',
   `peer_id` binary(20) NOT NULL DEFAULT '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0',
   `fid` int(11) NOT NULL,