Twitter urls updated

[grillermo]

I was getting errors and then looked at the settings and i had to change

REQUEST_TOKEN_URL = 'https://api.twitter.com/oauth/request_token'
ACCESS_TOKEN_URL = 'https://api.twitter.com/oauth/access_token'
AUTHORIZE_URL = 'https://api.twitter.com/oauth/authorize'
AUTHENTICATE_URL = 'https://api.twitter.com/oauth/authenticate'