Fix upvotes in upvote box on left, add mongo server localhost connection

Placed upvotes in dummy upvote box, added a global variable in the mongo file to allow easy localhost connection to server.
Is anyone having trouble setting up envirnoment variables?

Another alternative might be to simply paste the uri into mongoose.connection().

But, as you've said, we must be careful not to commit connection strings. Whenever someone looks over a merge request, please verify that mongo.js is either not modified or does not have the connection string.