Change RestrictionPolicy type to INTEGER in SQL

BLOB is not the way, we need something easy.

src/sqlite/external_servers_preferences.sql

@@ -2,7 +2,7 @@
 
 CREATE TABLE IF NOT EXISTS external_servers_preferences (
 	id TEXT NOT NULL PRIMARY KEY,
-	external_servers BLOB NOT NULL,
+	external_servers INTEGER 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
 );

src/sqlite/external_servers_privacy_preferences.sql

@@ -2,14 +2,14 @@
 
 CREATE TABLE IF NOT EXISTS external_servers_privacy_preferences (
 	id TEXT NOT NULL PRIMARY KEY,
-	discovery BLOB NOT NULL,
+	discovery INTEGER NOT NULL,
 	discovery_user_limit TEXT NOT NULL,
 	discovery_server_limit TEXT NOT NULL,
-	last_seen BLOB NOT NULL,
+	last_seen INTEGER NOT NULL,
 	last_seen_user_limit TEXT NOT NULL,
 	last_seen_server_limit TEXT NOT NULL,
 	last_seen_course INTEGER DEFAULT 0 NOT NULL,
-	info BLOB NOT NULL,
+	info INTEGER NOT NULL,
 	info_user_limit TEXT NOT NULL,
 	info_server_limit TEXT NOT NULL,
 	CONSTRAINT external_servers_privacy_preferences_FK FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE ON UPDATE CASCADE

src/sqlite/privacy_preferences.sql

@@ -2,14 +2,14 @@
 
 CREATE TABLE IF NOT EXISTS privacy_preferences (
 	id TEXT NOT NULL PRIMARY KEY,
-	discovery BLOB NOT NULL,
+	discovery INTEGER NOT NULL,
 	discovery_user_limit TEXT NOT NULL,
 	discovery_server_limit TEXT NOT NULL,
-	last_seen BLOB NOT NULL,
+	last_seen INTEGER NOT NULL,
 	last_seen_user_limit TEXT NOT NULL,
 	last_seen_server_limit TEXT NOT NULL,
 	last_seen_course BOOLEAN DEFAULT 0 NOT NULL CHECK (last_seen_course IN (0, 1)),
-	info BLOB NOT NULL,
+	info INTEGER NOT NULL,
 	info_user_limit TEXT NOT NULL,
 	info_server_limit TEXT NOT NULL,
 	CONSTRAINT privacy_preferences_FK FOREIGN KEY (id) REFERENCES users(id) ON DELETE CASCADE ON UPDATE CASCADE