Added Angular Page for Searching through Users

I added client-side page for searching through Users.  I still need to confirm how to do an API call to the server to retrieve the User Document from Mongo.  I copied how the template setup the API calls, but based on my limited-understanding of the server code, I doesn't seem like it should work. 

I also added the "name" property to the User Schema, since it only had 'username' before.