Finish cleaning up rendering stack from views and move assigns evaluation to controller (so plugins and/or controllers can overwrite just one method).

changed test to get TestMailer to use :file delivery method directly (as setup action was resetting delivery_method to :test on init

Delegated ActionMailer::Base.deliveries to Mail.deliveries, added callback support in Mail to call ActionMailer on delivery, moved deliver to deprecated API in preparation for new API

Updating deprecated API to sanitize old style attachments hash to work with new mail.attachments method

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Updating to Mail 1.5.0, including default values for all Message#field_name methods, can access field objects by calling Message#[:field_name]

Updating to Mail 1.5.0, including default values for all Message#field_name methods, can access field objects by calling Message#[:field_name]

Signed-off-by: NYehuda Katz <wycats@Yehuda-Katz.local>

Signed-off-by: NMichael Koziarski <michael@koziarski.com>

Conflicts:

	actionmailer/lib/action_mailer/base.rb