Fixccnloglik

This fixes a couple of bugs in `method.CC_nloglik$computeCoef`. Specifically:

* `Z` wasn't being bounded when calculating `cvRisk`, so `log(0)` or `log(1)` resulted in `NaN`.
* I was using `Z` where I meant to use the logit of `Z` when calculating the risk during the optimization routine
* `r$message` was misspelled as `r$messate`

I also changed the stopping criterion for the optimization routine which seems to do better, and truncated very small weights.