Issue #2225681 by quietone, Jo Fitzgerald, dipakmdhrm, Adita, RytoEX, maxocub, Gábor Hojtsy, phenaproxima, heddn, masipila, iMiksu, ao2, catch, alexpott, xjm: Migrate D6 i18n blocks translated strings

Issue #2960013 by quietone, Jo Fitzgerald, mikeryan, alexpott: i18n menu links translation in wrong directory

Issue #2225587 by quietone, Jo Fitzgerald, alexpott, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2: Migrate D6 i18n menu links

Revert "Issue #2225587 by quietone, Jo Fitzgerald, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2, alexpott: Migrate D6 i18n menu links"

This reverts commit 66480d7f.

Issue #2225587 by quietone, Jo Fitzgerald, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2, alexpott: Migrate D6 i18n menu links

Issue #2914974 by quietone, rakesh.gectcr, maxocub, heddn, Jo Fitzgerald, Yogesh Pawar, masipila, phenaproxima, jhodgdon, Gábor Hojtsy, larowlan, neclimdul: Migrate UI - handle sources that do not need an upgrade