[dankefuerslesen] fix several issues (#7669)

- return chapters in first-to-last order
- provide 'group' as list of names
- remove hardcoded 'en' and 'English' language results
- replace 'popitem()' with non-destructive 'next(iter(…))'
- 'chapter-minor' -> 'chapter_minor'

test/results/dankefuerslesen.py

@@ -22,10 +22,10 @@ __tests__ = (
     "date"      : "dt:2025-02-09 19:03:08",
     "extension" : "png",
     "filename"  : str,
-    "group"     : "Good Try Scans",
+    "group"     : ["Good Try Scans"],
     "group_id"  : 69,
-    "lang"      : "en",
-    "language"  : "English",
+    "lang"      : None,
+    "language"  : None,
     "manga"     : "Awana-chan wa Kyou mo Shiawase",
     "manga_slug": "awana-chan-wa-kyou-mo-shiawase",
     "title"     : "Eat some ramen!",
@@ -58,10 +58,10 @@ __tests__ = (
     "date"      : "dt:2024-10-10 07:12:44",
     "extension" : "png",
     "filename"  : str,
-    "group"     : "Danke fürs Lesen & Senko-san's Abode",
+    "group"     : ["Danke fürs Lesen", "Senko-san's Abode"],
     "group_id"  : 56,
-    "lang"      : "en",
-    "language"  : "English",
+    "lang"      : None,
+    "language"  : None,
     "manga"     : "Raul and The Vampire",
     "manga_slug": "raul-and-the-vampire",
     "title"     : "Volume 1 Extras",
@@ -71,10 +71,17 @@ __tests__ = (
     "#url"     : "https://danke.moe/read/manga/awana-chan-wa-kyou-mo-shiawase/",
     "#class"   : dankefuerslesen.DankefuerslesenMangaExtractor,
     "#pattern" : dankefuerslesen.DankefuerslesenChapterExtractor.pattern,
-    "#count"   : 4,
+    "#results" : (
+        "https://danke.moe/read/manga/awana-chan-wa-kyou-mo-shiawase/1/1/",
+        "https://danke.moe/read/manga/awana-chan-wa-kyou-mo-shiawase/2/1/",
+        "https://danke.moe/read/manga/awana-chan-wa-kyou-mo-shiawase/3/1/",
+        "https://danke.moe/read/manga/awana-chan-wa-kyou-mo-shiawase/4/1/",
+    ),
 
-    "chapter": range(1, 4),
+    "chapter" : range(1, 4),
     "chapter_minor": "",
+    "lang"    : None,
+    "language": None,
 },
 
 )