- motor_blog/options.py
    now get options like attribute

- motor_blog/web/handlers.py
    workaround until define variable positions settings/options

- server.py
    copy onlye the settings part of motor_blog.conf
Add all config options as application settings
Now *really* fix option parsing for Tornado 3
Require Tornado 3
Live Writer compatible
Code refactory
PEP8 all the things!!
Unused imports
Improve comment.
Replace engine with coroutine everywhere.
Don't depend on MotorCursor.tail, which is going away.
Tornado already defines logging options

And setting a default here disables logging to stderr in debug mode.
Obsolete TODO
Fix cache bugs introduced when removing call to MotorCursor.tail()
Update to latest Motor

Motor's API at rev 47dd7857 is close to what Motor 0.2's will be. Always pass 'length' to 'to_list', don't use WaitAllOps.