[cli] improve democracy + commitments commands (#368) #782

Job	Run time
Build Runtimes (encointer-node-notee)	2m 54s
Cancel Previous Runs	2s
build	5m 14s
cargo-toml-fmt	9s
Rust check +nightly fmt --all -- --check (x86_64-unknown-linux-gnu)	24s
build-try-runtime-and-benchmarks	4m 21s
Rust check clippy -p encointer-client-notee (x86_64-unknown-linux-gnu)	5m 53s
unit-tests	2m 10s
test_bootstrap_demo_community.sh	21m 38s
test_bot_community.sh	7m 44s
test_register_business.sh	2m 2s
Draft Release	23s
Publish Runtimes (encointer-node-notee)	17s
	53m 11s

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