Add Content-Type to User Read.

Issues: #18
Add Access-Control-Allow-Origin to Blend::User Read.

Issues: #18
Merge branch 'master' into issues/18
Merge branch 'master' into features/documentation
Add stub bibliography.
Add small story in the prologue about margarine.

The documentation's focus is on cloud application design but that
doesn't preclude talking about margarine completely.
Add more links to the bibliography.

As mentioned these may need to be merged into the documentation proper
but for now references have been added to start the fleshing process on
this documentation.
Add outline for part 0—Cloud Fundamentals.
Add datastore chapter to development part.
Add chapter on big data to part 1—developing.
Add notations to part 2 outline for configuration management.
Add continuous integration to part 1.
Add stub part 3—Everything Else.
Add CD to Cloud Operations.
Add pillar ideas to part 1—developing.
Add sectioning to the prologue.

Deepens the information we have about margarine's overarching story.
Add IRC channel to margarine URLs.
Add note about drawing architectures in documentation.
Add start of a glossary.

A definitive glossary will be convenient but several items will need
proper definitions and abbreviation markers within the documentation
themselves.
Update document title.