[tests][s]: remove create.json tests as route no longer exists (see d9e5c86240804ef36e5b6a273b5c538c9e00fad4).
[refactor][xs]: change some routes method names.
[#19,dataApi][m]: support for .json in data API (plus raw).
[#19,dataApi][s]: show links to data API in the data package page.

* But do not show them in the viewer tool as will not work there