Add help text to new/edit actions

app/views/error_templates/_form.html.slim

@@ -16,4 +16,5 @@
   .form-group
     = f.label(:hint)
     = f.text_field(:hint, class: 'form-control')
+    .help-block == t('error_templates.hints.hint_templates')
   .actions = render('shared/submit_button', f: f, object: @error_template)

config/locales/de.yml

@@ -666,6 +666,7 @@ de:
   error_templates:
     hints:
       signature: "Ein regulärer Ausdruck in Ruby-Syntax und ohne führende und schließende \"/\""
+      hint_templates: 'Attributnamen in {{doppelten geschweiften Klammern}} werden zur Laufzeit durch die jeweiligen Attributwerte ersetzt. Beispiel: "Der Fehler ist in Zeile {{Line}}." --(StructuredError: {Line: 4})--> "Der Fehler ist in Zeile 4."'
     attributes: "Attribute"
     add_attribute: "Attribut hinzufügen"
   comments:

config/locales/en.yml

@@ -666,6 +666,7 @@ en:
   error_templates:
     hints:
       signature: "A regular expression in Ruby syntax without leading and trailing \"/\""
+      hint_templates: 'Attribute names in {{double curly braces}} are replaced by the corresponding attribute value at runtime, e.g. "The error occurs in line {{Line}}." --(StructuredError: {Line: 4})--> "The error occurs in line 4."'
     attributes: "Attributes"
     add_attribute: "Add attribute"
   comments: