Only show the login/register links on index page.

[#47383131]
+ Action mailer initializer for sending confirmation and pw reset emails

ation_mailer.rb

closes: [#47333029] "Send me reset password instructions" page failure

https://www.pivotaltracker.com/story/show/47333029
Merge branch 'staging' into production

* staging:
  + Action mailer initializer for sending confirmation and pw reset emails
  Only show the login/register links on index page.