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/yonkouprod.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2016, 2017 Mike Fährmann
+# Copyright 2016-2017 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -8,19 +8,14 @@
 
 """Extract manga-chapters from https://yonkouprod.com/"""
 
-from .foolslide import FoolslideChapterExtractor
+from . import foolslide
 
 
-class YonkouprodChapterExtractor(FoolslideChapterExtractor):
+class YonkouprodChapterExtractor(foolslide.FoolslideChapterExtractor):
     """Extractor for manga-chapters from yonkouprod.com"""
     category = "yonkouprod"
-    pattern = [(r"(?:https?://)?(?:www\.)?(yonkouprod\.com/reader/read/"
-                r"[^/]+/([a-z]{2})/\d+/\d+)")]
+    pattern = foolslide.chapter_pattern(r"(?:www\.)?yonkouprod\.com/reader")
     test = [("http://yonkouprod.com/reader/read/fairy-tail/en/0/512/", {
         "url": "7647850e2b1ad11c2baa9628755bf7f186350a0b",
         "keyword": "d079c718d6620478fa72a700fdd027f9a0f0760b",
     })]
-
-    def __init__(self, match):
-        url = "https://" + match.group(1)
-        FoolslideChapterExtractor.__init__(self, url, match.group(2))