fixed --force option

don't close ZipFile if package directory exists and --force has been specified, otherwise
the installation fails with a "zip file closed" exception
Fixed the date unit test that fails when you are west of GMT.
Updated the Maven build to pull in Rhino snapshot from pykl.org repository and updated libraries to match current master.
Added connectTimeout and readTimeout to httpclient implementation (with test).
Added timeout to httpclient.
Fixed duplicate developer.