Make imported files trigger events with their extra attributes present
Make imported files trigger events with their extra attributes present

This will make extra attributes ("path", "mtime", "imported") on imported
files be present at the time of the "model.file.save.created" event,
so event handlers can more intelligently handle imported files.

This will also remove an unnecessary extra call to the database.

msmolens/girder,sutartmelson/girder,essamjoubori/girder,girder/girder,opadron/girder,kotfic/girder,opadron/girder,msmolens/girder,essamjoubori/girder,salamb/girder,Xarthisius/girder,jbeezley/girder,sutartmelson/girder,sutartmelson/girder,adsorensen/girder,kotfic/girder,RafaelPalomar/girder,data-exp-lab/girder,Kitware/girder,data-exp-lab/girder,salamb/girder,essamjoubori/girder,data-exp-lab/girder,RafaelPalomar/girder,jbeezley/girder,Xarthisius/girder,msmolens/girder,adsorensen/girder,kotfic/girder,opadron/girder,msmolens/girder,Kitware/girder,salamb/girder,kotfic/girder,opadron/girder,sutartmelson/girder,essamjoubori/girder,girder/girder,manthey/girder,kotfic/girder,Xarthisius/girder,Kitware/girder,Xarthisius/girder,adsorensen/girder,Kitware/girder,manthey/girder,manthey/girder,girder/girder,RafaelPalomar/girder,adsorensen/girder,sutartmelson/girder,RafaelPalomar/girder,data-exp-lab/girder,salamb/girder,jbeezley/girder,msmolens/girder,essamjoubori/girder,opadron/girder,adsorensen/girder,Xarthisius/girder,manthey/girder,jbeezley/girder,girder/girder,data-exp-lab/girder,salamb/girder,RafaelPalomar/girder