** Added DAOs for AuthSource and AuthSourceSetting entities
** Added AuthSourceController
** Added scribe and jackson dependencies into core dependencies
** Added common interface for all AuthenticationProviders
** Added LoginSessionBean (session scoped bean that can be used for
storing login time data)
** Added abstract base class for authentication strategies
** Added abstract base class for OAuth -based authentication strategies
** Added page for login requests
** Added initial version of Google oAuth strategy