Modify database layout

sqlite/external_servers_preferences.sql

@@ -1,7 +1,7 @@
 -- external_servers_preferences definition
 
 CREATE TABLE external_servers_preferences (
-	id INTEGER NOT NULL,
+	id INTEGER NOT NULL PRIMARY KEY,
 	external_servers BLOB NOT NULL,
 	external_servers_limit TEXT NOT NULL,
 	CONSTRAINT external_servers_preferences_FK FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE ON UPDATE CASCADE

sqlite/external_servers_privacy_preferences.sql

@@ -1,7 +1,7 @@
 -- external_servers_privacy_preferences definition
 
 CREATE TABLE external_servers_privacy_preferences (
-	id INTEGER NOT NULL,
+	id INTEGER NOT NULL PRIMARY KEY,
 	discovery BLOB NOT NULL,
 	discovery_user_limit TEXT NOT NULL,
 	discovery_server_limit TEXT NOT NULL,

sqlite/notification_preferences.sql

@@ -1,7 +1,7 @@
 -- notification_preferences definition
 
 CREATE TABLE notification_preferences (
-	id INTEGER NOT NULL,
+	id INTEGER NOT NULL PRIMARY KEY,
 	lock_details INTEGER DEFAULT 0 NOT NULL,
 	do_not_disturb INTEGER DEFAULT 0 NOT NULL,
 	CONSTRAINT notification_preferences_FK FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE ON UPDATE CASCADE

sqlite/privacy_preferences.sql

@@ -1,7 +1,7 @@
 -- privacy_preferences definition
 
 CREATE TABLE privacy_preferences (
-	id INTEGER NOT NULL,
+	id INTEGER NOT NULL PRIMARY KEY,
 	discovery BLOB NOT NULL,
 	discovery_user_limit TEXT NOT NULL,
 	discovery_server_limit TEXT NOT NULL,

sqlite/security_preferences.sql

@@ -1,7 +1,7 @@
 -- security_preferences definition
 
 CREATE TABLE "security_preferences" (
-	id INTEGER NOT NULL,
+	id INTEGER NOT NULL PRIMARY KEY,
 	account_tokens TEXT NOT NULL,
 	password_hash TEXT NOT NULL,
 	CONSTRAINT NewTable_FK FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE ON UPDATE CASCADE

sqlite/users.sql

@@ -1,7 +1,7 @@
 -- users definition
 
 CREATE TABLE users (
-	id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	id INTEGER NOT NULL PRIMARY KEY,
 	user_name TEXT NOT NULL,
 	display_name TEXT,
 	activated INTEGER DEFAULT 0 NOT NULL,