* Backport pull request #279 from strongloop/feature/phases (Miroslav Bajtoš)
 * Add remotes.registerPhaseHandler (Miroslav Bajtoš)
 * Add remote invocation phases (Miroslav Bajtoš)
 * Simplify invokeMethodInContext (Miroslav Bajtoš)
 * Extract ContextBase and ctx.getScope() (Miroslav Bajtoš)
 * Customize XML root element in remoteMethod (David Cheung)