Writing unit test for User class
Unit test for User class settled for now
Modified ensure unique id function - format is different. We want underscore to split prefix and number
Do not want  as a property. Updating unit test as well
Properly log out
Applied the User class to login and signup
Wrote Deck, Tag, Card, and wrote unit test for adding deck and cards
Change the id column of 'tags' table to 'tagid'