[cli] improve democracy + commitments commands (#368) #781

Job	Run time
build	22m 40s
Build Runtimes (encointer-node-notee)	13m 13s
build-try-runtime-and-benchmarks	23m 6s
Cancel Previous Runs	3s
cargo-toml-fmt	12s
Rust check +nightly fmt --all -- --check (x86_64-unknown-linux-gnu)	49s
unit-tests	18m 14s
Rust check clippy -p encointer-client-notee (x86_64-unknown-linux-gnu)	10m 36s
test_bootstrap_demo_community.sh	21m 42s
test_bot_community.sh	7m 45s
test_register_business.sh	2m 5s
Draft Release	0s
Publish Runtimes	0s
	2h 0m 25s

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