Finish testing of Serverless Workflow Sandbox

What needs to be tested:

• Sample showcases - select sample and check they are correctly displayed
  • SWF
  • Dashbuilder
• Recent models
  • Reopening
  • Deleting
  • Workspaces
• Create
  • Serverless Workflow JSON/YAML
  • Serverless Decision JSON/YAML
  • Dashboard
• Import
  • From URL
    • Github repo
    • Github gist
    • other URL
  • Drag and Drop
  • Files and Folders
• Repo sync
• Settings
  • Github token
  • KIE Sandbox Extended Services
  • OpenShift
  • Service Account
  • Service Registry
  • Streams for Apache Kafka
  • Feature Preview
    • Kogito Serverless Workflow Visualization
• Editor