Least change to adapt with python3

change some syntax
- except clause
- unicode -> bulitins.str
- sqllite uri
- fix import local path
- 01 to 1  (0 is meaningless)

add module
- future
- builtins (from future)
- imp (python3 )
- past (from future)
- sqlalchemy (update one)

refer to
http://python-future.org/compatible_idioms.html

cps/db.py

@@ -294,7 +294,8 @@ def setup_db():
         return False
 
     dbpath = os.path.join(config.config_calibre_dir, "metadata.db")
-    engine = create_engine('sqlite:///{0}'.format(dbpath.encode('utf-8')), echo=False, isolation_level="SERIALIZABLE")
+    #engine = create_engine('sqlite:///{0}'.format(dbpath.encode('utf-8')), echo=False, isolation_level="SERIALIZABLE")
+    engine = create_engine('sqlite:///'+ dbpath, echo=False, isolation_level="SERIALIZABLE")
     try:
         conn = engine.connect()