improved foolslide-based extractors

- this includes dokireader, fallenangels, jaiminisbox, powermanga,
  sensescans, worldthree, yonkouprod, gomanga, yomanga
- added 'chapter_string', 'chapter_id', 'chapter_minor' and 'count'
  keywords
- changed the 'chapter' keyword to always be just a number
- changed the default directory format

gallery_dl/extractor/fallenangels.py

@@ -8,25 +8,20 @@
 
 """Extract manga-chapters from http://famatg.com/"""
 
-from .foolslide import FoolslideChapterExtractor
+from . import foolslide
 
 
-class FallenangelsChapterExtractor(FoolslideChapterExtractor):
+class FallenangelsChapterExtractor(foolslide.FoolslideChapterExtractor):
     """Extractor for manga-chapters from famatg.com"""
     category = "fallenangels"
-    pattern = [(r"(?:https?://)?((?:manga|truyen)\.famatg\.com/read/"
-                r"[^/]+/([a-z]{2})/\d+/\d+(?:/\d+)?)")]
+    pattern = foolslide.chapter_pattern(r"(?:manga|truyen)\.famatg\.com")
     test = [
         ("http://manga.famatg.com/read/chronos_ruler/en/0/20/", {
             "url": "a777f93533674744b74c9b57c7dfa7254f5ddbed",
-            "keyword": "47ac083cac8a3c0aaf0f6b571a9bfb535217fd31",
+            "keyword": "76e7130a64d96317e3e4dcd55d770c9f6d9cb71d",
         }),
         ("https://truyen.famatg.com/read/madan_no_ou_to_vanadis/vi/0/33/", {
             "url": "b46bf1ef0537c3ce42bf2b9e4b62ace41c2299cd",
-            "keyword": "9eb750934f4f712211f5a7063c2206693b7cedf9",
+            "keyword": "658cdbecd3a1698f5462c1db437b423b6bcf7dd3",
         }),
     ]
-
-    def __init__(self, match):
-        url = "https://" + match.group(1)
-        FoolslideChapterExtractor.__init__(self, url, match.group(2))