MyCollection -> Branded Search: complete model and functionality

Complete steps required to generate mySearch:

- Sharing publicly with URL prefix

- Uploading, reviewing and using orga and search images

- Description (!)

- Name

• Reflect in UI (dataTables)

(from redmine: issue id 180, created on 2018-01-22tgradl, closed on 2018-01-22)

• Relations:
  • relates #186 (closed)