Use group duration as a response time for group statistics, close #886
Upgrade Netty 3.6.1.Final, close #894
Migrate to Scala 2.10, close #895, close #887
Merge pull request #896 from excilys/scala2.10

Migrate to Scala 2.10, close #895, close #887
Minor clean up
Upgrade scala-maven-plugin 3.1.1, close #897
Make ExtendedRequest and PaddableStringBuilder implicit classes
Fix cookie propagation from HTTP to HTTPS, close #899
Better HTTP logging
use plexus-utils' DirectoryScanner, remove Ant dependency
Merge pull request #901 from pdalpra/master

Remove Maven plugin's last dependency to Ant, DirectoryScanner
Fix OK/KO group stats, close #898
Implement cookie DSL
Remove ActionBuilder.withNext, pass next on build
Simplify action names
Introduce Chainable so Action don' require next, delete BypassSessionHookBuilder
Remove useless scalaz import
Make UserStart Chainable
Minor clean up
Fix param/multiValuedParam(String)