Add a locale-aware relative-time helper; drop stale locale overrides

Node.recently_changed and the new dashboard need "X ago" rendered
correctly in both locales. Rails' own distance_of_time_in_words/
time_ago_in_words can't do this on their own -- the scope option
changes which translation key is looked up, not the underlying
grammar, and German's "vor" requires dative case, which is a
different word form than the nominative plural Rails computes by
default. relative_time_phrase/relative_distance is a small, from-
scratch bucketing helper instead, with an explicit, hand-checked
translation table per unit per locale.

Also removes de.yml's datetime.distance_in_words and activerecord.
errors blocks. Both used the old {{count}}/{{model}} interpolation
syntax the current i18n gem no longer recognizes -- it silently
leaves the literal placeholder text in the rendered output rather
than erroring, which is why this went unnoticed until now. Both were
shadowing rails-i18n's own current, correct translations for exactly
these keys; deleting the local override lets the gem's version take
over instead of maintaining a second, broken copy.

2 files changed, 8 insertions, 66 deletions

diff --git a/config/locales/de.yml b/config/locales/de.yml
index 1f2222c..550ccb3 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -14,6 +14,10 @@ de:
   open_days_label: "Offene Tage"
   upcoming_events: "Weitere Termine"
   open_today: "Das Chaos, lokal und heute offen"
+  published: "veröffentlicht"
+  published_by: "veröffentlicht durch %{editor}"
+  editor_self: "du"
+  publisher_self: "dich"
   date:
     formats:
       default: "%d.%m.%Y"
@@ -29,7 +33,6 @@ de:
       - :day
       - :month
       - :year
-
   time:
     formats:
       default: "%A, %e. %B %Y, %H:%M Uhr"
@@ -41,42 +44,6 @@ de:
     am: "vormittags"
     pm: "nachmittags"
 
-  datetime:
-    distance_in_words:
-      half_a_minute: 'eine halbe Minute'
-      less_than_x_seconds:
-        zero: 'weniger als 1 Sekunde'
-        one: 'weniger als 1 Sekunde'
-        other: 'weniger als {{count}} Sekunden'
-      x_seconds:
-        one: '1 Sekunde'
-        other: '{{count}} Sekunden'
-      less_than_x_minutes:
-        zero: 'weniger als 1 Minute'
-        one: 'weniger als eine Minute'
-        other: 'weniger als {{count}} Minuten'
-      x_minutes:
-        one: '1 Minute'
-        other: '{{count}} Minuten'
-      about_x_hours:
-        one: 'etwa 1 Stunde'
-        other: 'etwa {{count}} Stunden'
-      x_days:
-        one: '1 Tag'
-        other: '{{count}} Tage'
-      about_x_months:
-        one: 'etwa 1 Monat'
-        other: 'etwa {{count}} Monate'
-      x_months:
-        one: '1 Monat'
-        other: '{{count}} Monate'
-      about_x_years:
-        one: 'etwa 1 Jahr'
-        other: 'etwa {{count}} Jahre'
-      over_x_years:
-        one: 'mehr als 1 Jahr'
-        other: 'mehr als {{count}} Jahre'
-
   number:
     format:
       precision: 2
@@ -105,35 +72,6 @@ de:
       sentence_connector: "und"
       skip_last_comma: true
 
-  activerecord:
-    errors:
-      template:
-        header:
-          one: 1 error prohibited this {{model}} from being saved
-          other: "{{count}} errors prohibited this {{model}} from being saved"
-        body: "There were problems with the following fields:"
-
-      messages:
-        inclusion: "is not included in the list"
-        exclusion: "is reserved"
-        invalid: "is invalid"
-        confirmation: "doesn't match confirmation"
-        accepted: "must be accepted"
-        empty: "can't be empty"
-        blank: "can't be blank"
-        too_long: "is too long (maximum is {{count}} characters)"
-        too_short: "is too short (minimum is {{count}} characters)"
-        wrong_length: "is the wrong length (should be {{count}} characters)"
-        taken: "has already been taken"
-        not_a_number: "is not a number"
-        greater_than: "must be greater than {{count}}"
-        greater_than_or_equal_to: "must be greater than or equal to {{count}}"
-        equal_to: "must be equal to {{count}}"
-        less_than: "must be less than {{count}}"
-        less_than_or_equal_to: "must be less than or equal to {{count}}"
-        odd: "must be odd"
-        even: "must be even"
-
   will_paginate:
     previous_label: "← Zurück"
     previous_aria_label: "Vorherige Seite"
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 59c7304..73271ed 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -15,6 +15,10 @@ en:
   open_days_label: "Open days"
   upcoming_events: "Upcoming events"
   open_today: "Open today"
+  published: "published"
+  published_by: "published by %{editor}"
+  publisher_self: "you"
+  editor_self: "you"
 
   time:
     formats: