[review-request] michaelw/toaster/orm-split-up

[Michael Wood <michael.g.wood@intel.com>]

This is a slightly reduced scope version of the refactoring of the ORM 
that was discussed. The orm can continue to be a central place for 
database abstraction and the bldcollector can take over the function 
that was confusingly part of the orm application.

This reduces the changes from potentially /most/ files in toaster to a 
select few, as after looking at this the gain from changing more of the 
application doesn't outweigh the risk for regressions and potential 
disruption.

commit e35930be7c9fc99d5244c28c4f37eaece1615606
Author: Michael Wood <michael.g.wood@intel.com>
Date:   Tue Jun 16 16:00:26 2015 +0100

     bitbake: toaster: split orm app into it's own module and app

     The orm application was also the django application to collect the 
build
     information. Splitting this module up into it's functional parts. orm
     for the data module and bldcollector for build collection data.

     [YOCTO #7706]

     Signed-off-by: Michael Wood <michael.g.wood@intel.com>