Mandrill should be called server side.

* origin/master: (31 commits)
  Fixing checkout conflicts.
  post review fixes (cherry picked from commit 7d24c6d)
  show error messages for card editing (cherry picked from commit e5bc25d)
  if auth changed, fetch addresses
  home link on guest checkout auth page
  show gift cards info (cherry picked from commit dbcf591)
  auto select one card (cherry picked from commit 1e38f8c)
  do not always ask for credit card (cherry picked from commit 073fa5b)
  configure flow and linter
  load cart after sign-up in checkout
  Tightening up the custom page without working contact.
  Production deployment.
  A bit of styling on the checkout error message
  Enter button fix on guest checkout.
  Display checkout errors at the top of the form
  Signup overlay must appear above the guest checkout one.
  Updating favicon location.
  Updating favicon and store title.
  Adding new divider style.
  Updating styles for signup form.
  ...

Conflicts:
	package.json
	server/app.js