[ref] add trait for DuniterConf

Cargo.lock

Cargo.toml

blockchain/Cargo.toml

blockchain/dbex.rs

blockchain/lib.rs

blockchain/sync.rs

conf/Cargo.toml

conf/lib.rs

conf/test/conf.json

core/Cargo.toml

core/lib.rs

dal/Cargo.toml

dal/block.rs

dal/dal_requests.rs

dal/lib.rs

message/Cargo.toml

message/lib.rs

module/Cargo.toml

module/clippy.toml

module/lib.rs