Add support for disabling channel logging

database_settings.sql

@@ -1,7 +1,8 @@
 create table channels(id int primary key not null,
 	server_id int not null, -- foreign key in servers table
 	name text not null,
-	public int not null
+	public int not null,
+	enabled int not null
 );
 
 create table users(id int primary key not null,
@@ -13,7 +14,8 @@ create table users(id int primary key not null,
 create table servers(id int primary key not null,
 	name text not null,
 	host text not null,
-	port int not null
+	port int not null,
+	enabled int not null
 );
 
 create table accessors(user_id int not null, -- foreign key in users table