implement BaseUrl to allow https for Clients
add Show, Eq and Ord for BaseUrl
added instance Generic BaseUrl
put BaseUrl in it's own module
moved S.Client.BaseUrl to S.Utils.BaseUrl
put Req in Servant.Utils.Req
removed S.Utils.Client (and put the code into S.Client.Req)
module renaming: S.API.QQ -> S.Utils.ApiQuasiQuoting
module renaming: S.API.Elem -> S.Utils.Links
module refactoring: putting some things in Servant.Common
Merge pull request #28 from alpmestan/allow_https

implement BaseUrl to allow https for Clients