[FEATURE] Better Exception-Handling

ExceptionHandlers are now ResourceInterceptors. The ResourceInterceptors got three methods:
* before(...), called before the request is executed
* afterSuccess(...), called after the request was executed and not result in an exception
* afterFailure(...), called, when a request result in an exception.

As a side effect, all Interceptor classes are now instantiated with CDI (not with newInstance()) anymore,
so any CDI-Injection will take place before calling the interceptor-methods.

The same for any FilterConverters and QueryExecutors.
Merge branch 'master' of https://github.com/etecture/dynamic-resources