Revert "Merge branch 'master' of https://github.com/antoine64/SonataCoreBundle"

This reverts commit fadda38977657071fda40ae2854e0db0b6e3f0d2, reversing
changes made to 38cd03607a37faa88f0ff768c98063e56bc028d2.

Conflicts:
	Date/MomentFormatConverter.php