fix import

district/forms.py

 from django import forms
+from django.utils.safestring import mark_safe
 from wagtail.admin.forms import WagtailAdminPageForm
 from wagtail.models.collections import Collection
 
@@ -29,11 +30,12 @@ class JekyllImportForm(WagtailAdminPageForm):
     jekyll_repo_url = forms.URLField(
         max_length=512,
         required=False,
-        help_text="V GitHubu tlačítko Code -> a odkaz z Download zip"
-        "např. 'https://github.com/pirati-web/cb.pirati.cz/archive/refs/heads/gh-pages.zip',"
-        "pokud máte nainstalovaný Git, zvolte Použít Git a vložte"
-        "jednoduše URL repozitáře "
-        "např. 'https://github.com/pirati-web/cb.pirati.cz'",
+        help_text=mark_safe(
+            "V GitHubu tlačítko Code -> a odkaz z <strong>Download zip</strong>, "
+            "např. <em>https://github.com/pirati-web/cb.pirati.cz/archive/refs/heads/gh-pages.zip</em>. "
+            "Pokud máte nainstalovaný Git, zvolte <strong>Použít Git</strong> a vložte jednoduše "
+            "URL repozitáře, např. <em>https://github.com/pirati-web/cb.pirati.cz</em>."
+        )
     )
     readonly_log = forms.CharField(
         disabled=True,

shared/jekyll_import.py

@@ -546,7 +546,7 @@ class JekyllArticleImporter:
             r = re.split(r"^---\s*$", f.read(), maxsplit=3, flags=re.MULTILINE)
         try:
             meta = yaml.safe_load(r[1].replace("\t", ""))
-        except (ScannerError, ValueError):
+        except (ScannerError, ValueError, IndexError):
             msg = "Nelze importovat článek - neparsovatelný YAML"
             logger.warning(msg, extra={"file_path": file_path})
             self.page_log += "{} - {}\n".format(msg, file_path)