Improve new status API

Make sure state changes are only detected as such by sqlalchemy if they
are real changes

lib/redpage.py

@@ -61,11 +61,11 @@ class RedPage( MysqlRedPage ):
             self._page = page
 
         super().__init__(
-            pageid=pageid,
-            revid=self.page._revid,
-            pagetitle=self.page.title(),
-            status=MutableSet() ) #TODO EMPTY MutableSet() necessary?
-        #~ self._status = set()
+            pageid=self._page.pageid,
+            revid=self._page._revid,
+            pagetitle=self._page.title(),
+            status=None
+            )
 
         self.is_archive()
 
@@ -95,9 +95,9 @@ class RedPage( MysqlRedPage ):
         if( self.archive or ( u"/Archiv" in self.page.title() ) or
             ( "{{Archiv}}" in self.page.text ) or
             ( "{{Archiv|" in self.page.text ) ):
-
-                return True
+                self.status.add("archive")
         else:
+                self.status.discard("archive")
                 return False
 
     def is_parsing_needed( self ):