Review attribute translater integration

[yurem]

IDP ignores all attributes which we put into principal except UsernamePrincipal.

In 4.2 we added to IDP script same code to allow to customize hardcoded translation (lines 58-71). Block in line 73 (disabled) do the same via contexts. But in both cases IDP ignores principals. It looks like that IDP uses attributes which it gets from DB only.

I think we can extend the existing attribute resolver to append additional attributes which we get during translation. Or we can review our integration to conform to IDP 4.0. I think the integration based on servlets will stop working in IDP 5. And we need to update our code beforehand.