fixed: removed double encoding in OAuth2Provider

Author: Jorge

ChangeLog

@@ -1,6 +1,5 @@
 master		
 		- Fixed example for view customization docs (thanks @yankov)
-		- Fixed: scope values were not being url encoded in OAuth2Provider
 		- Enable retrieving email address from LinkedIn (thanks @targeter)
 		- Added strings to securesocial.conf in demos (thanks @alanrodas)
 		- Added idLengthInBytes property to customize the length of session ids (based on changes by @mkubala)

module-code/app/securesocial/core/OAuth2Provider.scala

@@ -126,7 +126,7 @@ abstract class OAuth2Provider(application: Application, jsonResponse: Boolean =
           (OAuth2Constants.RedirectUri, RoutesHelper.authenticate(id).absoluteURL(IdentityProvider.sslEnabled)),
           (OAuth2Constants.ResponseType, OAuth2Constants.Code),
           (OAuth2Constants.State, state))
-        settings.scope.foreach( s => { params = (OAuth2Constants.Scope, URLEncoder.encode(s, "UTF-8")) :: params })
+        settings.scope.foreach( s => { params = (OAuth2Constants.Scope, s) :: params })
         val url = settings.authorizationUrl +
           params.map( p => p._1 + "=" + URLEncoder.encode(p._2, "UTF-8")).mkString("?", "&", "")
         if ( Logger.isDebugEnabled ) {