add localization service
Added extension mehtod for Claim
Added support for adding additional claims from cookie/incoming principal to outgoing token (default impl adds acr)
Merge pull request #660 from jageall/dev

Fixes #659 : Change RefreshToken to use ClientId from token
add category to localization service
Merge pull request #661 from thinktecture/localization

add localization service
added code comment
null checks on ctor params
cleanup DI registration
try to cleanup registration APIs
add another extension method for decorator + default instance
enhance Di to allow named registrations
initial tests for caching
updated cache API to async; reworked default cache
add additional caching extension methods
add caching by default to host
add caching user service; fix autofac config
Merge pull request #667 from thinktecture/di

DI Update
add proper key constants
cleanup registration classes; fix singleton registration semantics with autofac