Fixed JERSEY-1842: Incorrect method name in Filterable.

Change-Id: I5fbced966938441b1ea753e9e572a2a82c5c3c7a
JERSEY-1928: Odd behaviour with empty "path info".

 - Fix + integration test.

Change-Id: I501df1e0b15dc6755790741bc23a38c1d156fae9
Merge "Fixed JERSEY-1842: Incorrect method name in Filterable."
Merge "JERSEY-1928: Odd behaviour with empty "path info"."