ENC-3160: Fork project and fix failing unit tests

Hi @szymonatportland,

Could you please be reviewing. This is an extension to the Spring Social framework that I have forked so I could get it to a state that actually works. The main spring-social-salesforce doesn't have the Salesforce API's updates implemented but a fork of it for Alfresco does. So we've got a fork of a fork. You could say it's well and truly forked.

I'll be sending you a pull request for the main project soon which will show it in use. You can wait until then if you like.