INT-2720: UriTemplate support for S-WS transports

Remove deprecation in the WS module
Polishing failed tests

JIRA: https://jira.springsource.org/browse/INT-2720
https://jira.springsource.org/browse/INT-2530

Special thanks to Arjen Poutsma, who reviewed the `UriTemplate` and introduced `OpaqueUriComponents`.