[DROOLS-250] avoid NPE in MVELConstraint
BZ1001935 - No editor available for Guided Score Cards
JBPM-4112 - Clean up and migrate ProtobufProcessMarshaller fully to ProtoBuf
few more tests
BZ1001027 - Guided Decision Table: validation error when using a Work Item
Trial fix for BZ967609
(cherry picked from commit 3976289e0b0f32badfc98b7cdfe66ab43e1b0e34)
BZ986000 - Unable to use some options for int sub-fields in Guvnor
[BZ-986000] fix DRL to RuleModel unmarshalling
BZ986000 - Unable to use some options for int sub-fields in Guvnor
Reproducer for BZ1005204
BZ986000 - DRL-to-RuleModel marshalling improvements
BZ986000 - DRL-to-RuleModel marshalling improvements
[BZ-986000] fix DRL to RuleModel unmarshalling
BZ-986000 - DRL-to-RuleModel marshalling improvements
[BZ-986000] fix DRL to RuleModel unmarshalling
Merge pull request #246 from manstis/BZ967609

Trial fix for BZ967609
[BZ-967609] log a warning when a value coming from a linked sheet cannot be resolved
BZ-1006079: sorting OTCs prior to serialization
(cherry picked from commit 34031e1a75d0391b30e6bd5462dd85dd4928dbdd)
 - adding support for some missing knowledge-api factories
 - adding backwards compatibility support for ProcessEventListener