PIM-1439 : Fix PHP documentation
Merge branch 'master' into PIM-1439
PIM-1439 : Change method name to normalize label
PIM-1439 : Refactor normalizers and update UT
Merge branch 'master' into PIM-1439
PIM-1439 : Fix doc in UT
PIM-1439 : Fix php doc
PIM-1439 : Clean php documentation
PIM-1439 : Clean php doc
PIM-1439 : Update Ut
PIM-1439 : Refactor attribute option normalizer UT
PIM-1439 : Fix UT
Merge pull request #480 from akeneo/PIM-1439

PIM-1439 : Normalizer refactoring