*6902* Refactor review assignment DAO overrides into lib-pkp
*6902* Dead code removal
*6902* Refactor all of ReviewAssignment/DAO into PKP lib
*8319* Allow assistant roles to access the submission archive
Correct log message for submissionId parameter instead of articleId
Standardize locale key location; fix articleId change to submissionId
Remove magic number 0 in favour of CONTEXT_SITE
Merge branch 'master' of https://github.com/pkp/ojs