BS-10020, Make unit test safe to parallel executions by different JVMs
BS-10203 : Update all engine Tomcat test suites

- Change version of integration tests for tomcat 7 in 7.0.55
- Fix bad conf for h2
BS-10200, deleted all tomcat 6 reference on the Engine test suites
Replace CustomUserInfoConverter by ModelConvertor
Clear the bonita home :
- Remove empty files
- Move the tenant service conf from the server folder to the tenant folder
- Move the model conf from the server service folder to the server model folder
- Rename the recorder of the platform in platformRecorderSync to differentiate to the tenant recorder
- Add the recorder in the platform service
- Modify create & update tenant method to use the recorder, to throw an event
- Remove identity service on platform accessor (unused, and the service is on the tenant)
BS-9447 : Implement method authorization checking on server side

- Move Exceptions
- Refactor code
Fix bad dependency in pom of platform
do not warn about empty transactions
Remove useless .gitignore files
Updated default test config
Merge branch 'BS-10196_Bundles_upgrade' into 'master'
Merge branch 'master' into BS-9425_StepContract

Conflicts:
	bpm/bonita-core/bonita-process-engine/src/main/java/org/bonitasoft/engine/service/ModelConvertor.java
	bpm/bonita-core/bonita-process-engine/src/test/java/org/bonitasoft/engine/service/ModelConvertorTest.java