BS-906
Export connector wizard can lead to an error in the chosen connector

Conflicts:
	tests/org.bonitasoft.studio.actors.tests/src/org/bonitasoft/studio/actors/tests/exporter/SWTBotActorFilterExportTests.java
BS-2822: delete properties file related to actor definitions, delete
empty packages for Validators, Custom Data Types and Connectors
Merge branch 'master' of https://github.com/bonitasoft/bonita-studio

Conflicts:
	platform/platform.target
BS-897
Advanced preview window doesn't display all the fields
BS-906
Export connector wizard can lead to an error in the chosen connector

Conflicts:
	tests/org.bonitasoft.studio.actors.tests/src/org/bonitasoft/studio/actors/tests/exporter/SWTBotActorFilterExportTests.java
BS-6693: Avoid issues when an Environment is no more defined at
repository level but still in a process
Merge branch 'master' of https://github.com/bonitasoft/bonita-studio
Update dependency to Engine javadoc
remove bad required plugin from gmfgen
Merge remote-tracking branch 'origin/master' into DataManagement