Add navigation item for file templates

app/views/application/_navigation.html.slim

@@ -8,7 +8,7 @@
         - if current_user.admin?
           li = link_to(t('breadcrumbs.dashboard.show'), admin_dashboard_path)
           li.divider
-        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, InternalUser, Submission, Team].sort_by { |model| model.model_name.human(count: 2) }
+        - models = [ExecutionEnvironment, Exercise, Consumer, CodeHarborLink, ExternalUser, FileType, FileTemplate, InternalUser, Submission, Team].sort_by { |model| model.model_name.human(count: 2) }
         - models.each do |model|
           - if policy(model).index?
             li = link_to(model.model_name.human(count: 2), send(:"#{model.model_name.collection}_path"))

config/locales/de.yml

@@ -120,6 +120,9 @@ de:
       file:
         one: Datei
         other: Dateien
+      file_template:
+        one: Dateivorlage
+        other: Dateivorlagen
       file_type:
         one: Dateityp
         other: Dateitypen

config/locales/en.yml

@@ -120,6 +120,9 @@ en:
       file:
         one: File
         other: Files
+      file_template:
+        one: File Template
+        other: File Templates
       file_type:
         one: File Type
         other: File Types