Remove obselete `ChunkedResult` code sample
Fixed some jnotify loading issues

Fixes #2620.

This change does two things:

* Ensures that jnotify is loaded lazily.  This means on platforms where
  loading jnotify throws an exception, the exception is only thrown when
  you go to run Play, it's not thrown immediately when Play loads.
* Ensures that after an SBT reload, jnotify still works.  It does this
  by making the classloader that jnotify is loaded in (which is a hack
  that dynamically adds a new library to the library path) available
  globally through the platform mbean server.
Don’t use ContentTypeOf in play-ws
More column conversions
Merge pull request #3238 from julienrf/ws/do-not-use-contenttypeof

Don’t use ContentTypeOf in play-ws
Merge pull request #3014 from cchantep/fix-3014

Docs: ScalaStream page shows example using deprecated ChunkedResult
Merge pull request #2620 from jroper/lazy-watch-service

Reloading play project leads to JNotify Errors
Merge pull request #3243 from cchantep/anorm-colconv

Anorm column conversions