TYRUS-345: NPE is thrown, when shared container timeout property in JDK client is not set
	+ minor fixes in JDK client thread pool tests
Documentation of SSL host verification (introduced in TYRUS-339)
Adding Ondrej as a developer
ServletWriter - adding item to task queue before setWriteListener(...) is called

- solves the issue when onWritePossible() is invoked right when registration is done and from the same thread. Current implementation will leave the task in queue until next one arrives.
TYRUS-347: Introduce better synchronization in JDK client thread pool
TYRUS-335: Separating Session user properties and distributed properties.

+ 5 second timeout for sending sync messages using RemoteSession (TBD)