ignore trailing slashes in ~/.pybossa.cfg

[therealmarv]

Wrong (look at the end slash of 7000):

[test]
server: http://localhost:7000/
apikey: xyz

Right:

[test]
server: http://localhost:7000
apikey: xyz

Would be better if pbs ignores the end / in the cfg automatically and can concatenate addresses always right.

[Daniel Lombraña González]

That would be a nice fix :D