Improve user interface for creating new messages in messages plugin

config/locales/de.yml

@@ -74,13 +74,6 @@ de:
         orders: Bestellung
         paid_on: Bezahlt am
         supplier: Lieferant
-      message:
-        body: Inhalt
-        group_id: Gruppe
-        private: Privat
-        recipient_tokens: Empfänger_innen
-        send_to_all: An alle Mitglieder schicken
-        subject: Betreff
       order:
         boxfill: Kistenfüllen ab
         closed_by: Abgerechnet von

config/locales/en.yml

@@ -74,13 +74,6 @@ en:
         orders: Order
         paid_on: Paid on
         supplier: Supplier
-      message:
-        body: Body
-        group_id: Group
-        private: Private
-        recipient_tokens: Recipients
-        send_to_all: Send to all members
-        subject: Subject
       order:
         boxfill: Fill boxes after
         closed_by: Settled by

config/locales/fr.yml

@@ -76,10 +76,8 @@ fr:
         supplier: Fournisseur-e
       message:
         body: Contenu
-        group_id: Cellule ou équipe
         private: Privé
         recipient_tokens: Destinataires
-        send_to_all: Envoyer à tous les membres
         subject: Sujet
       order:
         boxfill: 

config/locales/nl.yml

@@ -76,10 +76,8 @@ nl:
         supplier: Leverancier
       message:
         body: Bericht
-        group_id: Groep
         private: Privé
         recipient_tokens: Geadresseerden
-        send_to_all: Aan alle leden sturen
         subject: Onderwerp
       order:
         boxfill: Dozen vullen na