CRM-2173: PYP: Customer import falls down with "The EntityManager is closed"
   - migrate to latest AkeneoBatchBundle version
BAP-6719: Avoiding to use friendsofsymfony bundle
Merge pull request #43 from laboro/ticket/CRM-2173

CRM-2173: PYP: Customer import falls down with "The EntityManager is clo...
Merge pull request #45 from laboro/fix/BAP-6719_fos_rest_update

BAP-6719: Avoiding to use friendsofsymfony bundle
Merge remote-tracking branch 'remotes/dev/master'