Artifacts managemement

[zoevas]

Presentation: https://docs.google.com/presentation/d/1FhA14V1nGRfxlT_MU7-W58jhKAkNchw1f_T9QpqgKg4/edit#slide=id.ge29738600c_0_8

• Non-text artifacts
  We should solve the issue since the content is broken.
  IDE will send the artifact encoded in base64. In such a way characters will be encoded into ASCII characters.
  Reasoner should decode the file and save it to KB. When the file is requested, we should check if tomcat encodes it automatically.

• Replication/duplication of the data in the Reasoner should be avoided
  Right now, each time /aadm for getting the json is called, new files for the artifacts are created.

• Fixing Unrestricted access to the artifacts - add authentication
  The files should be secured. When the url is clicked, http://..../Ansibles/vfvdfdfgdgd
  then a service from the Reasoner could be called for checking a token, and verify if the user has access to the file.
  For the RMs should be role-based because RMs are shared among many users.
  401 error should be sent to the user when no access is allowed.