Uncomment the current_user helper method
-This method checks whether the user is logged in
-If user is logged in, display the message that they're logged in along
with a link to log out
Add jQuery code to generate order summary at bottom of purchase form
Destroy welcome_mailer
-mailer is not sending email correctly so i'm destroying the mailer and
generating a new one
Add activation_mailer for new account validation/activation
-Add header partial template which contains a nav bar