CS-5033: Adds option to disable protocol for generating urls
CS-5033: Adds systempreference for protocol in Smarty generated urls
CS-5033: Changes service name and changes smarty parameter to be consistent with system preference
CS-5033: Adds SmartyUseProtocol system preference to upgrade procedure
CS-5033: Adds methods in template engine classes for protocol relative urls
CS-5033: Makes comment more consistent with preference name
CS-5033: Removed comment on advice from Paweł

https://github.com/sourcefabric/Newscoop/pull/714#discussion_r13696411
CS-5033: Refrasing of system preferences text
Merge pull request #714 from m038/CS-5033

WIP - CS-5033: Removes protocol from urls