Scala allows to nest functions inside other functions. Enhance existing HTML / XML / JSON reports in such way that we could see such nesting as well.

Some of the required functionality has already been done during implementation of lambda functions for Java 8 (Clover 3.2). Review if all possible nesting combinations are implemented in Velocity templates (method-in-method, class-in-method etc). Affects: table with list of methods for a class, calculation of metrics etc.