Update build.xml

Switch to 4 processes for the new CI server.
Remove sorting on metric column
Update build.xml

Revert to 2 processes, needs more infrastructure configuration.
Merge branch 'master' of github.com:akeneo/pim-community-dev
Update build.xml

Test with 3 processes.
Update build.xml
PIM-1608 Add a behat scenario to make sure immutable properties of attributes can't be changed
Update changelog
Merge branch 'master' of github.com:akeneo/pim-community-dev
Merge branch 'master' into feature/pim-1532
PIM-1532 Fixed php cs