BZ-1035259 - Could not find a work item handler for REST, BZ- 1035256 -Could not find a work item handler for WebService

(cherry picked from commit 3aa65069b5b2169603341d5c3cf95a603de4ad1f)
Massive round of copy editing
(cherry picked from commit e00f4b5bb432b2596c4f6d110c3365addb54396c)
BZ-991058: Implementing support to access control on rules and processes execution.
(cherry picked from commit 30bf1efd2a1c344509606ad3e9632bdd321392a7)
BZ-1021886, BZ-1001972 - Moving DeployedUnit, DeploymentUnit, DeploymentService from jbpm-kie-services to kie-internal
BZ-1034720 - Language property missing from GetTasksByVariousFieldsCommand
[DROOLS-361] make incremental compilation to automatically calculate the list of modified files
(cherry picked from commit a6983db234ef1aa4b1a278572e745446675e82e9)