Fixes #3243 : Upgrade Rudder to Scala 2.10
Merge pull request #113 from VinceMacBuche/proto_scala2.10

Fixes #3229 : Scala 2.10
Ref #3243 : revert change to deprecated user management in SPRIng
Merge pull request #114 from VinceMacBuche/proto_scala2.10

Ref #3243 : revert change to deprecated user management in SPRIng
Ref #3243: remove deprecation warning for UserDetailsService

Also clear the session in case of a login error and import.
Merge pull request #115 from fanf/arc_3243/dev/remove_deprecation_warning_UserDetailsService

Ref #3243: remove deprecation warning for UserDetailsService