Enabled domain classes conversion via conversion service.

@see http://static.springsource.org/spring-data/data-jpa/docs/current/reference/html/#web-domain-class-binding
@see http://stackoverflow.com/q/12421485

No functional changes.
Initial
extract input
modify view a bit
added TODO.collection
improved messages
updated TODO
TODO: +1
Deal with collection view (TODO: +3, -3)
deal with scheme (TODO: -1)
Added services (TODO: -3, +2)
simple refactoring & remove unused import
fixed redirect
make it work (TODO: -1)
/collection/update: protect from anonymous (TODO: -1, +1)
Show series at collection page (TODO: -3, +1)
TODO: +1, -1
WhenAnonymousUserOpenNotExistingCollectionPage
added base it
de-final-ization