Paginate repositories list in the public app; Also ensure the Resource's Finding Aid Title is used for breadcrumbs and search results labels when Finding Aid Status == completed;
Fix show_published_only filter on backend to use the PUBLIC_USERNAME; Also ensure repositories are 'published' by default;
WIP Remove setup_context (not used) and begin using set_title... but first need to consolidate I18n locales
Introduce common/locales and refactor frontend and public apps to pull in from common and only override for interfac-type messages
Fix __singular references for sub note labels
Merge pull request #423 from hudmol/flesh-out-the-public-templates

[Delivers #48602367] public app pagination for repos and /common/locales