GUI improvements

[luciano-renzi]

• unify CSS styles
• Clean templates
• General report page does not work (/report/)
• Global settings page does not work (/settings/)
• Report:
  • Add spinners to unfinished executions
  • Live update unfinished executions status
  • Cache finished execution status responses
• Test builder page:
  • Run a test from test code view and test list
  • Customizable run test modal (select browser, envs, and processes)
  • Improve run test modal, use tabs to separate tests with multiple sets
• Access test code and page code views from test list and page list
• Refactor user auth code
• Add missing permission validations for users to projects
• Add toast message to suite list page when the project has zero tests