KRACOEUS-6956 : move ProposalDevelopmentService to core
KRACOEUS-6956 : move DevelopmentProposalLookupableHelperServiceImpl to core
KRACOEUS-6956 : move LookupableDevelopmentProposalLookupableHelperServiceImpl to core
KRACOEUS-6956 : move ProposalDevelopmentViewHelperServiceImpl to core
Merge pull request #94 from yyuan1/propdev_core_repack

KRACOEUS-6956 : move ProposalDevelopmentService to core