#73 implement PostSignup serverside

api/migrations/002_users.up.sql

@@ -2,7 +2,7 @@
 CREATE TABLE user (
 	user_uuid TEXT NOT NULL UNIQUE PRIMARY KEY,
 
-	email TEXT NOT NULL,
+	email TEXT NOT NULL UNIQUE,
 	email_verified BOOLEAN NOT NULL,
 
 	is_admin BOOLEAN NOT NULL,
@@ -10,5 +10,5 @@ CREATE TABLE user (
 	password BLOB NOT NULL,
 	salt BLOB NOT NULL,
 
-	created_at DATETIME NOT NULL,
+	created_at DATETIME NOT NULL
 ) WITHOUT ROWID;