Fixed issue: --buildId will disnable --no-signing

Fixed issue:
1. `webworks build --release --buildId 1234 --no-signing`: `--no-signing` was ignored when a `--buildId` is provided
2. `webworks build [--debug] --buildId 1234`: `--buildId` wasn't set in manifest of bar file in debug build
Can we update the description to be a bit more informative? This will confuse users. They will think it's a required field for signing. Maybe something like "Optionally forces whether to sign the build (true by default for release builds)".