"Edit" labels in the issuable sidebar are not consistent

In the issuable sidebar, for Weight we're using s__('Sidebar|Edit') (https://gitlab.com/gitlab-org/gitlab-ee/blob/cf0bdf3a658f4328fc9a978ed03bd5cdd2618cfc/ee/app/assets/javascripts/sidebar/components/weight/weight.vue#L176) while for Lock we're using __('Edit') (https://gitlab.com/gitlab-org/gitlab-ee/blob/cf0bdf3a658f4328fc9a978ed03bd5cdd2618cfc/app/assets/javascripts/sidebar/components/lock/lock_issue_sidebar.vue#L79).

This brings 2 questions:

1. Should we only use the generic __('Edit') label in both cases (and in all the similar cases in general? I would say, yes always use __('Edit').
2. Should we add the Sidebar| namespace? I would no, no need for a namespace if we're using the generic __('Edit').

@jramsay What do you think?