Add compass logo with favicon set and quote claim titles in the UI.

Introduces SVG and PNG icon assets with manifest links, and wraps public claim titles in German quotation marks.

Co-authored-by: Cursor <cursoragent@cursor.com>

claims/templatetags/claims_extras.py

@@ -15,6 +15,13 @@ def evidence_label(value):
     return dict(Claim.EvidenceLevel.choices).get(value, value)
 
 
+@register.filter
+def quoted(value):
+    if not value:
+        return value
+    return f'„{value}"'
+
+
 @register.inclusion_tag('claims/partials/status_badge.html')
 def status_badge(claim):
     return {'claim': claim}