Add notes about closing WSClient cleanly
Merge pull request #2801 from wsargent/add-client-close-note

[doc] Add note about calling WSClient.close() manually after use
Issue #2782 Update to Java testing docs
Various documentation improvements

* Added YourKit link to highlights
* Added note about Scala 2.11 to highlights
* Added note about local ivy repo to highlights and migration
* Rewrote documntation on extending Play
specs2 dependencies should be "test" scope
Configure zentasks sample for less and coffeescript
Configure java/zentasks sample for less and coffeescript
Fix possibly null email field in java/zentasks sample
Configure scala/comet-live-monitoring for less and sbt-web
Update js engine for longer timeout and improved logging
Trim surrounding whitespace from xml content
Removed references to ScalaToDoList tutorial
Extracted remaining WS Scala code samples
Another timeout increase due to observing timeout issues on CI
SSLEngineProvider should now be used
Merge pull request #2830 from richdougherty/remove-unused-java-ssl-context

Remove unused SSLContextProvider class
Small doco improvements
Add a link to CSRF docs
Latest rjs documentation given changed behaviour.
Remove use of NotNull trait