Fix detection of invalid treatment names
Bug #31: connect components of graph using priors

 - testing remains to be done, including regression testing
Tighten auto-detection of likelihood/link
Fix error in C code

 - introduced when converting to the .Call interface
Add example to mtc.nodesplit man page
Fix rank probabilities and add test
Add line widths to network plottins - the width is the amount of studies comparing the treatments
Add number of treatment comparisons to the network summary
Change width of plotting graphs to be with larger differences
Fix incorrect implementation of nr studies per comparison computation.
Merge branch 'master' of github.com:tommite/gemtc into develop