Changed some parameters of the laplace, tidied up examples
Added constant to Z_tilde, now log likelihoods are equal!
Fixed gp_base and svigp for sampling (doesn't use it but needs the arguments)
Added optimize and plot for classification, non_gaussian and stochastic examples
Merge branch 'devel' of github.com:SheffieldML/GPy into devel
Changed more examples to accept optimize and plot
Minor changes to naming of signitures
Fixed examples tests, started changing datasets code which has a few bugs