* fixed formating/comments in users schema

* channels schema now uses a bigint unsigned for pid
this is to keep consistent with notion of id's being usize|u64 in rust
* foreign key constraint added to keys table referencing user rows

server/migrations/2020-02-04-083551_users/up.sql

@@ -1,13 +1,12 @@
 -- id: simple id tracking users
--- username: default name that users have to display
--- display: used as a non-unique eye candy for users
--- password: yea
--- email: used for signing in to the server
+-- name: default name that users have to display
+-- date: date that they signed up
+-- status: online/offline/away etc.
+
 CREATE TABLE IF NOT EXISTS `users` (
 	`id` bigint UNSIGNED NOT NULL auto_increment,
 	`name` varchar(255) NOT NULL,
-	`secret` varchar(255) NOT NULL,
 	`date` bigint UNSIGNED NOT NULL, 
-	`status` int NOT NULL,
+	`status` integer NOT NULL,
 	PRIMARY KEY( `id` )
 );