Remove JwtTokenServices
Add AuthorizationServerTokenServices bean
Add TokenEnhancer to AuthorizationServerSecurityConfigurer
Trap infinite loop in lazy proxies
Consolidate some @Autowiring
Factor out @Bean FrameworkEndpointHandlerMapping
Factor out non-filter concerns into *Endpoints*

There should be no need for @Lazy @Scope @Beans and most
of the old AuthorizationServerConfiguration was nothing to
do with Security, so we have split out the non-security
concerns and made a new method in the configurer.
Remove some more @Beans from endpoints config
Always register a TokenStore if there is none
Use convenience methods in OAuth2RequestFactory where possible
JwtTokenEnhancer -> JwtAccessTokenConverter