Fix starting values generation (fixed #609)

 - Adhere to RSM paper for random effects standard deviation starting value.
GeMTC version to 0.14.3 and bump R package version
Don't try to load "YADAS" package (fix #615)
Rename 'sd' to 'std.dev' (fix #617)
Sanity check the mtc.network (fix #616)
mtc.network fixes (fix #611, #618)

 - mtc.network.as.java explicitly sets names(treatments)
 - mtc.network preprocesses data and treatments
Normalize path before passing to Java (Fix #620)