Refactor acs-lang 'admin/index' page, adding the new columns 'total' and 'deleted' to the listing, and reworking the query so it is faster (53ms -> 7ms), correct (number of messages by state are computed coherently with other acs-lang pages) and gives more information
Bring back to life edit-history page: - fix oracle-only limit idiom - link the page to the UI (again?). Will be in acs-lang/admin - provide message key for the UI