53374 [gen_l10n] Fallback feature for untranslated messages (a: internationalization, cla: yes, team, tool, waiting for tree to go green)

53824 [gen_l10n] Add option for deferred loading on the web (a: internationalization, cla: yes, team, tool, waiting for tree to go green)

53868 [gen_l10n] Add scriptCode handling (a: internationalization, cla: yes, severe: new feature, team, tool)

53880 Use no locale as synonym for nb (a: internationalization, cla: yes, customer: dream (g3), f: cupertino, f: material design, team, waiting for tree to go green)

53954 [gen_l10n] Fix plural parsing for translated messages (a: internationalization, cla: yes, team, tool, waiting for tree to go green)