fixes #51 deleting a repo didn't delete it's dependent db entries.

fixed routes logger double entries

development.ini

@@ -136,6 +136,7 b' level = DEBUG'
 handlers = console
 qualname = routes.middleware
 # "level = DEBUG" logs the route matched and routing variables.
+propagate = 0
 
 [logger_rhodecode]
 level = DEBUG

production.ini

@@ -136,6 +136,7 b' level = INFO'
 handlers = console
 qualname = routes.middleware
 # "level = DEBUG" logs the route matched and routing variables.
+propagate = 0
 
 [logger_rhodecode]
 level = DEBUG

rhodecode/config/deployment.ini_tmpl

@@ -136,6 +136,7 b' level = INFO'
 handlers = console
 qualname = routes.middleware
 # "level = DEBUG" logs the route matched and routing variables.
+propagate = 0
 
 [logger_rhodecode]
 level = DEBUG

rhodecode/model/db.py

@@ -88,6 +88,8 b' class Repository(Base):'
     user = relation('User')
     fork = relation('Repository', remote_side=repo_id)
     repo_to_perm = relation('RepoToPerm', cascade='all')
+    stats = relation('Statistics', cascade='all')
+
 
     def __repr__(self):
         return "<Repository('id:%s:%s')>" % (self.repo_id, self.repo_name)
@@ -134,5 +136,5 b' class Statistics(Base):'
     commit_activity_combined = Column("commit_activity_combined", BLOB(), nullable=False)#JSON data
     languages = Column("languages", BLOB(), nullable=False)#JSON data
 
-    repository = relation('Repository')
+    repository = relation('Repository', single_parent=True)