More renaming.
Consistency in filenames: name after primary, singular type.
Come to think of it, a ListBuffer is a Builder.
Remove unused exceptions.
HttpChunk -> Chunk; split up model.scala
Merge branch 'develop' into topic/scalaz-task

Conflicts:
	core/src/main/scala/org/http4s/BodyParser.scala
	core/src/main/scala/org/http4s/MockServer.scala
	core/src/main/scala/org/http4s/Response.scala
	core/src/main/scala/org/http4s/Writable.scala
	core/src/main/scala/org/http4s/model.scala
	core/src/main/scala/org/http4s/package.scala
	core/src/main/scala/org/http4s/util/middleware/URITranslation.scala
	core/src/test/scala/org/http4s/ExampleRoute.scala
	examples/src/main/scala/org/http4s/examples/ExampleRoute.scala
	grizzly/src/main/scala/org/http4s/grizzly/Http4sGrizzly.scala
	netty/src/main/scala/org/http4s/netty/ChunkEnum.scala
	netty/src/main/scala/org/http4s/netty/Http4sNetty.scala
	servlet/src/main/scala/org/http4s/servlet/Http4sServlet.scala