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/ub.py

@@ -10,6 +10,7 @@ import os
 import logging
 from werkzeug.security import generate_password_hash
 from flask_babel import gettext as _
+from builtins import str
 
 dbpath = os.path.join(os.path.normpath(os.path.dirname(os.path.realpath(__file__)) + os.sep + ".." + os.sep), "app.db")
 engine = create_engine('sqlite:///{0}'.format(dbpath), echo=False)
@@ -90,7 +91,7 @@ class UserBase:
         return False
 
     def get_id(self):
-        return unicode(self.id)
+        return str(self.id)
 
     def filter_language(self):
         return self.default_language