Comasters

Hi,

This is the comasters branch.   At the start of a Job, you can put the job into the comasters mode. If the job's in that mode, you must name the files correctly. The reordering is done in master/comaster pairs.  When importing to Amber, rather than each file becoming a page, a master/master pair becomes a page.  The comaster is used for derivative generation and docworks. Both files become copies of the page work in Amber.  

When not in comaster mode, everything works the same way (except for a few minor UI changes).

This is obviously a very large change.  I'd appreciate any comments.

Cheers,
Huw.