Improve cleanup script to give users 1 month after warning before removing their account. Move user related logic into the user class. Add columns to the user_list table to track whether the user was warned about inactivity and the datetime of the warning.

tables/user_list.sql

@@ -3,13 +3,15 @@ use apidb;
 drop table if exists user_list;
 
 create table user_list (
-  stamp           timestamp not null,
-  userid          int not null auto_increment,
-  password        text not null,
-  realname        text not null,
-  email           varchar(255) not null,
-  created         datetime not null,
-  CVSrelease      text,
+  stamp                   timestamp not null,
+  userid                  int not null auto_increment,
+  password                text not null,
+  realname                text not null,
+  email                   varchar(255) not null,
+  created                 datetime not null,
+  inactivity_warn_stamp   timestamp not null, /* the time we warned the user */
+  inactivity_warned       enum('true','false') NOT NULL default 'false', /* if true, we warned the user */
+  CVSrelease              text,
   unique key(userid),
   unique(email)
 );