Restrict "Download log file" and "Show logs stored in database" buttons visibility

[njoubert-cleverage]

Description

Restrict "Download log file" and "Show logs stored in database" buttons visibility when data exists on http://process-bundle-demo.localhost/process?crudAction=index&crudControllerFqcn=CleverAge%5CUiProcessBundle%5CController%5CAdmin%5CProcessExecutionCrudController page.

Requirements

• Documentation updates
  • Reference
  • Changelog
• Unit tests

Breaking changes