diff --git a/biscuit/apps/exlibris/locale/de_DE/LC_MESSAGES/django.po b/biscuit/apps/exlibris/locale/de_DE/LC_MESSAGES/django.po
index 85af35fee30841242a7c25781d72a8653e10024a..064b8808f2fa5824b6353c44b3314a101e407bf6 100644
--- a/biscuit/apps/exlibris/locale/de_DE/LC_MESSAGES/django.po
+++ b/biscuit/apps/exlibris/locale/de_DE/LC_MESSAGES/django.po
@@ -7,101 +7,101 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-08-03 22:30+0200\n"
-"PO-Revision-Date: 2019-08-04 01:16+0200\n"
+"POT-Creation-Date: 2019-08-18 21:38+0200\n"
+"PO-Revision-Date: 2019-08-18 21:39+0200\n"
+"Last-Translator: Tom Teichler <tom.teichler@teckids.org>\n"
+"Language-Team: \n"
 "Language: de_DE\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Last-Translator: Tom Teichler <tom.teichler@teckids.org>\n"
-"Language-Team: \n"
 "X-Generator: Poedit 2.2.3\n"
 
 #: apps.py:7
 msgid "BiscuIT - Exlibris (School books)"
 msgstr "BiscuIT - Exlibris (Schulbücher)"
 
-#: forms.py:28
+#: forms.py:34
 msgid "Number of copies"
 msgstr "Anzahl der Exemplare"
 
-#: menus.py:8
+#: menus.py:6 templates/exlibris/books.html:5
+msgid "Books"
+msgstr "Bücher"
+
+#: menus.py:11
 msgid "List of books"
 msgstr "Liste der Bücher"
 
-#: menus.py:11
+#: menus.py:16
 msgid "Add book"
 msgstr "Buch hinzufügen"
 
-#: menus.py:16 templates/exlibris/books.html:5
-msgid "Books"
-msgstr "Bücher"
-
-#: models.py:10
+#: models.py:12
 msgid "Book title"
 msgstr "Buchtitel"
 
-#: models.py:12
+#: models.py:14
 msgid "Author name"
 msgstr "Name des Autors"
 
-#: models.py:14
+#: models.py:16
 msgid "Publishing company"
 msgstr "Verlag"
 
-#: models.py:17
+#: models.py:19
 msgid "Number of edition"
 msgstr "Nummer der Ausgabe"
 
-#: models.py:19
+#: models.py:21
 msgid "Publishing year"
 msgstr "Erscheinungsjahr"
 
-#: models.py:21
+#: models.py:23
 msgid "ISBN number"
 msgstr "ISBN-Nummer"
 
-#: models.py:24
+#: models.py:26
 msgid "Photo of cover"
 msgstr "Foto des Bucheinbandes"
 
-#: models.py:27
+#: models.py:29
 msgid "edition"
 msgstr "Ausgabe"
 
-#: models.py:42
+#: models.py:48
 msgid "New, unused"
 msgstr "Neu, unbenutzt"
 
-#: models.py:43
+#: models.py:49
 msgid "New, used"
 msgstr "Neu, benutzt"
 
-#: models.py:44
+#: models.py:50
 msgid "Slightly worn"
 msgstr "Leicht abgenutzt"
 
-#: models.py:45
+#: models.py:51
 msgid "Heavily worn"
 msgstr "Sehr abgenutzt"
 
-#: models.py:54
+#: models.py:60
 msgid "Current number of copy"
 msgstr "Lfd. Nummer des Exemplars"
 
-#: models.py:57
+#: models.py:63
 msgid "Number of borrowings"
 msgstr "Anzahl der Ausleihen"
 
-#: models.py:59
+#: models.py:65
 msgid "Condition"
 msgstr "Zustand"
 
-#: models.py:61
+#: models.py:67
 msgid "Remarks"
 msgstr "Anmerkung"
 
-#: models.py:64
+#: models.py:70
 msgid "Barcode"
 msgstr "Strichcode"
 
@@ -135,7 +135,9 @@ msgstr "von"
 
 #: views.py:75
 msgid "Information found for this ISBN was pre-filled."
-msgstr "Informationen, die über diese ISBN gefunden wurden, wurden bereits ausgefüllt."
+msgstr ""
+"Informationen, die über diese ISBN gefunden wurden, wurden bereits "
+"ausgefüllt."
 
 #: views.py:77
 msgid "No information found for this ISBN."
diff --git a/biscuit/apps/exlibris/menus.py b/biscuit/apps/exlibris/menus.py
index a6c50cf9a9c19e8e2b3d56ed34147776460d9e31..7d6e965c4cb50f7fa6d54304dfa4b02b97daf8ef 100644
--- a/biscuit/apps/exlibris/menus.py
+++ b/biscuit/apps/exlibris/menus.py
@@ -1,17 +1,19 @@
+from django.utils.translation import gettext as _
+
 MENUS = {
     'NAV_MENU_CORE': [
         {
-            'name': 'Books',
+            'name': _('Books'),
             'url': '#',
             'root': True,
             'submenu': [
                 {
-                    'name': 'List of books',
+                    'name': _('List of books'),
                     'url': 'books',
                     'validators': ['menu_generator.validators.is_authenticated']
                 },
                 {
-                    'name': 'Add books',
+                    'name': _('Add book'),
                     'url': 'add_book',
                     'validators': ['menu_generator.validators.is_authenticated']
                 }