Fire warnings for bills and expand webhook message cron job (#10696 and #10703 and #6836)

resources/lang/en_US/email.php

@@ -138,6 +138,11 @@ return [
     'new_journals_subject'                        => 'Firefly III has created a new transaction|Firefly III has created :count new transactions',
     'new_journals_header'                         => 'Firefly III has created a transaction for you. You can find it in your Firefly III installation:|Firefly III has created :count transactions for you. You can find them in your Firefly III installation:',
 
+    // subscription is overdue.
+    'subscription_overdue_subject'               => 'Your subscription ":name" is overdue to be paid',
+    'subscription_overdue_warning_intro' => 'Your subscription ":name" is overdue to be paid. At the following date(s) a payment was expected, but it has not yet arrived.',
+    'subscription_overdue_please_action' => 'Perhaps you have simply not linked the transaction to subscription ":name". In that case, please do so. You will NOT get another warning about this overdue bill.',
+    'subscription_overdue_outro' => 'If you believe this message is wrong, please contact the Firefly III developer.',
     // bill warning
     'bill_warning_subject_end_date'               => 'Your subscription ":name" is due to end in :diff days',
     'bill_warning_subject_now_end_date'           => 'Your subscription ":name" is due to end TODAY',

resources/views/emails/subscription-overdue-warning.blade.php

@@ -0,0 +1,10 @@
+@component('mail::message')
+{{ trans('email.subscription_overdue_warning_intro', ['name' => $bill->name]) }}
+
+@foreach($dates['pay_dates'] as $date)
+  - {{ $date }}
+@endforeach
+
+{{ trans('email.subscription_overdue_please_action', ['name' => $bill->name]) }}
+
+@endcomponent

resources/views/vendor/mail/text/message.blade.php

@@ -6,8 +6,14 @@
         @endcomponent
     @endslot
 
-    {{-- Body --}}
-    {{ $slot }}
+{{-- Body --}}
+{{ trans('email.greeting') }}
+
+{{ $slot }}
+
+{{ trans('email.closing') }}
+
+{{ trans('email.signature')}}
 
     {{-- Subcopy --}}
     @isset($subcopy)