Synchronize backend -> server, frontend -> client renames on the component API level
As we've seen recently and as is mentioned here (https://gitlab.coko.foundation/pubsweet/pubsweet.org/merge_requests/2), the component API still deals with backend and frontend terms.
https://gitlab.coko.foundation/pubsweet/pubsweet-cli/blob/master/src/start.js#L59 https://gitlab.coko.foundation/pubsweet/pubsweet-client/blob/master/src/components/actions.js#L5-6 https://gitlab.coko.foundation/pubsweet/pubsweet-client/blob/master/src/components/reducers.js#L5-6