Allow building with boost 1.42.
ensure to persist broken graphs + pull latest source code from UI if applicable
remove obsolete log messages
Merge pull request #7 from fabric-engine/rivera-persist-broken-graphs

Rivera persist broken graphs
only disconnect operators from the model that is being exported.
merge
Merge branch 'softimage_properties' of https://github.com/ahmidou/SpliceSoftimage into softimage_properties