Testing recommendations.

run 03_test_hw7.sql

go to the web app, login as 'david', 'davidpass' 
go to the recommendations page.
the ouput should be (in some form on their webpage! popularity is not
required to be printed):
   mtitle   | popularity 
------------+------------
 Armageddon |          3
 TRON       |          2
 Casino     |          1
 Bolt       |          1
 Batman     |          1
(5 rows)

OR descending mtitle:
   mtitle   | popularity 
------------+------------
 Armageddon |          3
 TRON       |          2
 Casino     |          1
 Bolt       |          1
 Batman     |          1
(5 rows)
