Add SMTP Config Wizard, Editable Email Templates
Add screenshots
Fix code markup
More markup fixes.
Markup making me crazy.
Update configuration_mail.rst
Merge branch 'master' into alrac2

Conflicts:
	admin_manual/configuration/configuration_mail.rst
Fix typos
Merge branch 'master' of https://github.com/owncloud/documentation into alrac2
markup corrections in configuration_mail.rst
Merge pull request #498 from owncloud/alrac2

Mail configuration -- add smtp config wizard, editable email templates