Adjustments in the documentation of Gateway HTTP
Rewritting Gateway HTTP documentation

New fields for AttemptsAPI: checkin and validations which are the checkpoints which contains notices.
Get a single ticket (it was missing since the first version of the documentation).
Ticket and Comment have new structure: Ticket has author and title, and Comment has author and date.
Fixed payload structure.
~
status in notice is String, instead of number
Fixes the next and previous route for tickets and attempts
Remove ticket_ from ticket_author and comment_ from comment_author and comment_date.
Merge branch 'master' of git://github.com/scieloorg/balaio into 80_doc_rev3

Conflicts:
	docs/dev/tickets-api.rst
Fixes issue_suppl_volume and issue_suppl_number
Merge branch 'master' of git://github.com/scieloorg/balaio into 80_doc_rev3
Ajustes de acordo com os comentarios do revisor do pull
voltei "collection_uri": "/api/v1/collections/1/",
Adicionando issue_year no filtro de packages
Merge pull request #128 from robertatakenaka/80_doc_rev3

Validação da documentação do Gateway HTTP (#80)
Merge branch 'master' of github.com:scieloorg/balaio into tk125