Report train wrecks as violation of information hiding principle

[RalfKoban]

We should report warnings for so-called train wrecks that violate the information hiding principle.
Train wrecks are calls such as var x = A.B.C.D.E.F.G.h() where A - G are properties or invocations.

The reason for the warning is that there is too much information involved and spread across the code. To call h() you need to know that there is an A which has a B which in turn has a C that has a D ...