Initia commit.
Added axelor-contact sources.
Added axelor-sale sources.
Entity definitions using AML.
Added common unit test sources.
Added unit test sources.
clean up.
Fixed views.
Updated some views.
updated persistence.xml
Fixed form view of Sale Order.
Adopted recent changes in core api.
Fixed pom.xml
Adopted core api changes.
Fixed pom.xml
Updated view (onclick action).
Updated onclick demo actions.

Implemented onclick action for nested record.
Also shows the O2M/M2M selected records passed
to the context.
Adopted new package naming convention.
Adopted recent action handler changes in core api.

- changed handler method signature
- added onchange demo
Updated Contact form view.