Merge pull request #214 from mattjonesorg/develop

Fixing spelling of a ninja bootstrap variable.
Async ContextImpl
Working version with improved content negotiation.
Fixed issues with Async ContextImpl
Merge pull request #217 from DazHudson/AsyncContext

Async ContextImpl
Added new error page designs.
Fix mistake in the sample code
HibernatePersistence is deprecated. Use HibernatePersistenceProvider instead.
Update team.md and changelog.md
Merge pull request #219 from eiryu/work

Fix Documentation
Added support for java.util.Date on BodyParserEnginePost through SwissKnife class.

Added some tests on BodyParserEnginePostTest as well to make sure everything is OK.
Some final tweaking + documentation.
Replaced smiley with IE compatible one.
Finished documentation.
Merge branch 'develop' into tech/add-support-for-provided-content-types
Added changes.
Added information about date parsing on docs.
Added whitespaces as requested by @raphaelbauer.
Fixed wrong placement of functionality on the changelog.
Merge pull request #223 from ninjaframework/tech/add-support-for-provided-content-types

Tech/add support for provided content types