ES2015 class properties should be documented when @hideconstructor is used

If @hideconstructor is present in an ES2015 constructor JSDoc comment the Constructor section and calling instructions are removed as expected.

However, any @property documentation from the class JSDoc comment also appears to be removed, which seems wrong as these document "instance"-related concepts that are independent of whether the constructor is part of the public API.

I propose that the properties table should be emitted in the context of the class documentation, and only @param values associated with the constructor be placed in the constructor section.

Start by tracing how ES2015 class JSDoc comments are rendered when @hideconstructor is present. Check the generated output for the class properties table, constructor section, calling instructions, and constructor @param values. Done means class @property documentation remains in the class documentation while only constructor parameters stay in the constructor section.