added functions mPrint and glmm_fitted
from my "programming source" folder.
Took them over much "as is" (except for prettification).
I'm unsure what we need the glmm_fitted for, I think it helps making figures after doing a glmm (using inverse link function to get to real values instead of logits)
Merge pull request #2 from rttl/rttl_devel_th

added functions mPrint and glmm_fitted