fix(members/pdf): don't escape umlaut

Partially reverts 2761efecaa. To handle invalid unicode characters, we now override
the LaTeX error message to remove invalid characters instead of crashing. We also
add various umlaut and invisible unicode characters to the test data.

jdav_web/members/templates/members/crisis_intervention_list.tex

@@ -3,6 +3,10 @@
 \documentclass[a4paper]{article}
 
 \usepackage[utf8]{inputenc}
+% remove all undefined unicode characters instead of throwing an error
+\makeatletter
+\def\UTFviii@undefined@err#1{}
+\makeatother
 \usepackage{booktabs}
 \usepackage{amssymb}
 \usepackage{cmbright}

jdav_web/members/templates/members/notelist_summary.tex

@@ -3,6 +3,10 @@
 \documentclass{article}
 
 \usepackage[utf8]{inputenc}
+% remove all undefined unicode characters instead of throwing an error
+\makeatletter
+\def\UTFviii@undefined@err#1{}
+\makeatother
 \usepackage{booktabs}
 \usepackage{tabularx}
 \usepackage{ragged2e}

jdav_web/members/templates/members/notes_list.tex

@@ -3,6 +3,10 @@
 \documentclass[a4paper]{article}
 
 \usepackage[utf8]{inputenc}
+% remove all undefined unicode characters instead of throwing an error
+\makeatletter
+\def\UTFviii@undefined@err#1{}
+\makeatother
 \usepackage{booktabs}
 \usepackage{tabularx}
 \usepackage{ragged2e}

jdav_web/members/templates/members/seminar_report.tex

@@ -3,6 +3,10 @@
 \documentclass[a4paper]{article}
 
 \usepackage[utf8]{inputenc}
+% remove all undefined unicode characters instead of throwing an error
+\makeatletter
+\def\UTFviii@undefined@err#1{}
+\makeatother
 \usepackage{booktabs}
 \usepackage{amssymb}
 \usepackage{cmbright}

jdav_web/members/templates/members/seminar_report_docx.tex

@@ -3,6 +3,10 @@
 \documentclass[a4paper]{article}
 
 \usepackage[utf8]{inputenc}
+% remove all undefined unicode characters instead of throwing an error
+\makeatletter
+\def\UTFviii@undefined@err#1{}
+\makeatother
 \usepackage{booktabs}
 \usepackage{amssymb}
 \usepackage{cmbright}

jdav_web/members/templatetags/tex_extras.py

@@ -1,6 +1,5 @@
 from django import template
 from django.utils.safestring import mark_safe
-from utils import normalize_name
 
 register = template.Library()
 
@@ -13,7 +12,7 @@ def checked_if_true(name, value):
 
 @register.filter
 def esc_all(val):
-    return mark_safe(str(normalize_name(str(val), False, False)).replace('_', '\\_').replace('&', '\\&'))
+    return mark_safe(str(val).replace('_', '\\_').replace('&', '\\&'))
 
 
 @register.filter

jdav_web/members/tests.py

@@ -215,15 +215,15 @@ class MemberTestCase(BasicMemberTestCase):
 
 class PDFTestCase(TestCase):
     def setUp(self):
-        self.ex = Freizeit.objects.create(name='Wild trip', kilometers_traveled=120,
+        self.ex = Freizeit.objects.create(name='Wild & ‬_törip', kilometers_traveled=120,
                                           tour_type=GEMEINSCHAFTS_TOUR,
                                           tour_approach=MUSKELKRAFT_ANREISE,
                                           difficulty=1)
-        self.note = MemberNoteList.objects.create(title='Cool list')
+        self.note = MemberNoteList.objects.create(title='Coolß! ‬löst')
 
         for i in range(7):
-            m = Member.objects.create(prename='Lise {}'.format(i),
-                                      lastname='Walter',
+            m = Member.objects.create(prename='Liääüuße {}'.format(i),
+                                      lastname='Walter&co ‬: _ kg &',
                                       birth_date=timezone.now().date(),
                                       email=settings.TEST_MAIL, gender=FEMALE)
             NewMemberOnList.objects.create(member=m, comments='a' * i, memberlist=self.ex)