Added validations to model-upload form
Added validations to model-upload form


Former-commit-id: 4ef1494f2cd8f872b209b8a6dbfeffa7c44adf4b
reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons,reuven/modelingcommons