Changed ResourceBuffer clears entries when an ResourceChangedEvent happens.
i.e. fixed so that when the value changes is risen in a provider, the cached key is removed from the buffer.
To remove a singel key if changed the value changed shall be formated like this.
Key -> Key in provider
Value -> New value
Tag -> Specific Culture Info object.
Merge pull request #17 from svallebro/master

Workaround fix for issue 9288