Architechture: Seperate assigning a valuer from accepting a job

A long time ago we made an architecture choice which is markedly different to what most other valuation systems implement.

We are aware that we need to split the act of accepting a job (valuation request received) from assigning a valuer (valuer will do the job).

This unfortunately is a tricky piece of work to accomplish, and is not yet scheduled.

Doing this would remove:
* The need for 'Office valuers'
* Allow better "Received by valfirm X" handling
* Better fit the LIXI model