[web] Move request handling logic into cubicweb application. (closes #2200684) We improve http status handling in the process: ``application.publish`` have been renamed to ``application.handle`` to better reflect it's roles. The request object gain a status_out attribute to convey the HTTP status of the response. WSGI and etwist code have been updated. Exception gain status attribute

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sync_schema_props_perms('state_of')

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sync_schema_props_perms('transition_of')

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for etype in ('State', 'BaseTransition', 'Transition', 'WorkflowTransition'):

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    sync_schema_props_perms((etype, 'name', 'String'))

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