Fixed partial handling and added cookies

databases/init/students.sql

@@ -0,0 +1,14 @@
+create table students (
+  userId    text  primary key,
+  firstName text,
+  lastName  text,
+  mail      text,
+  promo     integer,
+  foreign key(promo) references promo(id)
+);
+
+create table promo (
+  id      integer,
+  endyear integer,
+  current integer
+);