Add a generator to redfam yielding article pages

To work on articles of a redfam a generator which yields belonging
articles is necessary

Related Task: [https://fs.golderweb.de/index.php?do=details&task_id=87 FS#87]

lib/redfam.py

@@ -57,6 +57,9 @@ class RedFam:
         @param    heading         str         Original heading of RedFam (Link)
         """
 
+        # Having pywikibot.Site() is a good idea most of the time
+        self.site = pywikibot.Site()
+
         # Database interface
         self._mysql = MysqlRedFam( fam_hash )
 
@@ -455,6 +458,15 @@ class RedFamWorker( RedFam ):
         # with wrong month abreviations in strptime
         locale.setlocale(locale.LC_ALL, 'de_DE.UTF-8')
 
+    def article_generator(self):
+        """
+        Yields pywikibot pageobjects for articles belonging to this redfams
+        in a generator
+        self.
+        """
+        for article in self._articlesList:
+            yield pywikibot.Page(pywikibot.Link(article), self.site)
+
     def update_status( self ):
         """
         Sets status to 3 when worked on