Add a registration time stamp to the "Users" table

This allows for easily detecting old accounts that registered and never
used the confirmation e-mail to set an initial password.
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

UPGRADING

@@ -4,10 +4,12 @@ Upgrading
 From 2.2.0 to 2.3.0
 -------------------
 
-1. Add an inactivity time stamp to the "Users" table:
+1. Add registration and inactivity time stamps to the "Users" table:
 
 ----
-ALTER TABLE Users ADD COLUMN InactivityTS BIGINT NOT NULL DEFAULT 0;
+ALTER TABLE Users
+	ADD COLUMN RegistrationTS TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+	ADD COLUMN InactivityTS BIGINT NOT NULL DEFAULT 0;
 ----
 
 2. Add fields to store the total number of TUs and the quorum to the

support/schema/aur-schema.sql

@@ -36,6 +36,7 @@ CREATE TABLE Users (
 	LastLogin BIGINT UNSIGNED NOT NULL DEFAULT 0,
 	LastLoginIPAddress INTEGER UNSIGNED NOT NULL DEFAULT 0,
 	InactivityTS BIGINT UNSIGNED NOT NULL DEFAULT 0,
+	RegistrationTS TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
 	PRIMARY KEY (ID),
 	UNIQUE (Username),
 	UNIQUE (Email),