Adding some utility functions to UserModel.js
Adding some utility functions to UserModel.js

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