add. form request_obj from raw request.

add. method to construct request object with validation + filtering.

mod. get_data depends on raw request.

mod. simplify output view - now it just handles responding to the request which may include adding a request to the broker request target.

add. new error code for fetching queued requests.

mod. in output handle case where job is already queued.

add. a new broker target for jobs processing or running.

add. read/write to process broker target.

fix. call to add method in broker.

fix. cyclical dependency between request meta and data.

Change-Id: I51de1bba55f9b604cbf8ab03948816935841d8af

fix. Changed AnonymousUser to AnonymousUserMixin for flask-login 0.9 compatibility.

Change-Id: I89e8ac360192ecbbe349df4d9370ce751b96c24d