Merge pull request #12 from waded/master

Javadoc edits for clarity & typos
Fixing problem when imported metadata contains both SP and IDP entities under the same entityID.
Enabling propagation of defaults (e.g. ProxySettings) set in the HttpClient object for ArtifactResolution
Unifying exception handling. Profiles (websso package) now throw exceptions with complete error content and do not log errors. Filters catch exceptions from profiles, log them with debug level and throw further with ServletExceptions. Added chapter about error handling to documentation.
Adding NameID logging to the default SAMLDefaultLogger.
Merge pull request #1 from spring-projects/master

Catch up