Merge branch 'master' into develop
EntryPoint update, metadata fix, serialization simplification
separate core from server part 1
update licence info
extract api, add common Format, Mediatype
update license
refactor serialization processor and resolver (step 1)
rename processor package into his final name: serialization
remove ContentType
add message dispatcher, define interface for message observer, add utility observer
add priority on plugin
add base Url on server metadata
refactor base URL on Route, delegate this work on RouteResolver and RouteMapping
update console information
avoid join on media range parser
add text processor
add SLF4J message observer
add SLF4J message observer
=add access log using SLF4J
update license header