Add editing user spec.
Fix edit form.
add subject line and body specs for Spree::UserMailer

Fixes #106
Add default_url_options to user_mailer spec
Force Spree.user_class to be set to Spree::User to fix the infamous error:

rake aborted!
Association named 'spree_roles' was not found; perhaps you misspelled it?

It's tripped me up WAY too many times now.
Don't clear *all* the cookies and *all* the session when signing out
added named routes

Fixes #109
Fixes an error in production when using a custom Spree User class
Merge branch 'source/2-0-stable' into 2-0-stable

# By Ryan Bigg (3) and others
# Via Ryan Bigg
* source/2-0-stable:
  added named routes
  Don't clear *all* the cookies and *all* the session when signing out
  Force Spree.user_class to be set to Spree::User to fix the infamous error:
  Add default_url_options to user_mailer spec
  add subject line and body specs for Spree::UserMailer
  Fix edit form.
  Add editing user spec.

Conflicts:
	app/views/spree/user_passwords/new.html.erb