renamed model to agent
renamed FacilityAgent->Facility
renamed InstAgent->Institution
renamed RegionAgent->Region and fixed dup constructor issues
renamed model->agent (lower case) including file names
GenericResource->Product
rename GenRsrc->Product
renamed generic_resource.* to product.*
kill last remnants of generic resource
querybackend->queryablebackend
renamed query_engine to infile_tree
renamed infile tree name methods
Merge branch 'develop' into pp
added basic clone generation
added Clone support
refactored to codegen filter
added initfrom copy-like function
Merge branch 'pp_temp' into pp
Merge pull request #775 from rakhimov/pp

Preproc. Unit Tests
added high level primitives and cycns, added initfromdb for POD