Allow users to set preferred locale in settings and provide basic date and time localization support (#1226)

* Add basic date and time localization

* Normalize translations

* Localize transaction dates

* Removed unsupported Rails locales

config/i18n-tasks.yml

@@ -1,4 +1,6 @@
 base_locale: en
+fallbacks:
+  - default
 data:
   read:
     - config/locales/**/*%{locale}.yml
@@ -26,9 +28,16 @@ search:
 ignore_unused:
   - 'activerecord.attributes.*' # i18n-tasks does not detect these on forms, forms validations (https://github.com/glebm/i18n-tasks/blob/0b4b483c82664f26c5696fb0f6aa1297356e4683/templates/config/i18n-tasks.yml#L146)
   - 'activerecord.models.*' # i18n-tasks does not detect use in dynamic model names (e.g. object.model_name.human)
-  - 'activerecord.errors.models*'
+  - 'activerecord.errors*'
   - 'activemodel.errors.models.*'
   - 'helpers.submit.*' # i18n-tasks does not detect used at forms
   - 'helpers.label.*' # i18n-tasks does not detect used at forms
   - 'accounts.show.sync_message_*' # messages generated in the sync ActiveJob
   - 'address.attributes.*'
+  - 'date.*'
+  - 'time.*'
+  - 'datetime.*'
+  - 'number.*'
+  - 'errors.*'
+  - 'helpers.*'
+  - 'support.*'