[Feature Request] Search folders and apply existing materials on mesh import

User request: When importing a mesh from FBX with named materials assigned, search folders for existing identically named materials and automatically assign those to the mesh.

I thought that this worked already, but it seems that it only works if the material resides in the same folder where you import the mesh. In most cases, material libraries will be organized in other folders, so it would be useful if the import would search the entire project when assigning materials.

This would be particularly useful when you have a bunch of outsourced meshes with correctly named material stols and you want to import them and have UE4 materials from your library automatically assigned.