Redeclaration of getFacebookCookie()

[jbcayrou]

Hello,
In the file sfFacebook.class, there are two functions getFacebookCookies and it is the same.
Juste delete one :)

[BillyParadise]

Thank you thank you thank you!

[tobiassjosten]

I rolled a commit for this and made a pull request at https://github.com/fabriceb/sfFacebookConnectPlugin/issues#issue/14