Require new user registrations to confirm their email address before being allowed to log in. (#474)

Changes:

* Changed the Devise configuration allow_unconfirmed_access_for from 1 to 0 days

Author: cenon-delrosario

config/initializers/devise.rb

@@ -128,7 +128,7 @@
   # able to access the website for two days without confirming their account,
   # access will be blocked just in the third day. Default is 0.days, meaning
   # the user cannot access the website without confirming their account.
-  config.allow_unconfirmed_access_for = 1.days
+  config.allow_unconfirmed_access_for = 0.days
 
   # A period that the user is allowed to confirm their account before their
   # token becomes invalid. For example, if set to 3.days, the user can confirm