Fixed problem with generating paths something like this: ipn->ipn.
Added tests for MOM generating
Minor correction of tests.
Inited removeing the concat-paths function.
Fixed problem with cycling recursive queries: *cou (testing is needed).
Fixed tests due to new MOM.
Fixed problem with queries without paths (cl-source or cl-target are interface or abstract class).
Removed the concat-paths stage into generating of MOM.
Removed unnecassary code.
New MOM of the model of Nest project.