Adds feature spec for sitemap option in page configuration
Adds feature specs for the configuration form of normal and global pages.
Adds feature spec for page tagging configuration form view.
Adds short paragraph about testing Alchemy
Merge pull request #517 from nielspetersen/master

Adds short paragraph about testing Alchemy
Use `alchemy_display_name` to represent the currently logged in user.

To make this better adoptable for applications hosting Alchemy or engines, we do not assume `name` on the user class.