Added confirmable fields in users model
Installed figaro gem for environment variables
Created application.yml
Revert "Created application.yml"

This reverts commit 518806c9a942401a09e9e3b8305c3b9721322944.
GIT: Ignore application.yml
Modified seed file
Enable send emails from development
Generated all the views for the devise
Changed the size of the gravatar image
Modified user edit page
Added gems to pretify errors
Modified devise views
Changed domails in emails settings
Moved devise mailers views
Creaded a devise mailer and a layout
Modified the footer link of the email layout
Name is required in users model
Changed the use email views to address the user using names.
Changed reply to email for the devise mailer to nairubygroup@gmail.com
Use user_mails template for the devise emails