Modifies QAequilibraE menu

[r-akemii]

This PR:

• Removes menus About and Utils
• Rename Data > Display project data to Data > Visualize project data
• Rename menu Network Manipulation to Model Building
• Adds a new tab to _matrix_procedures/forms/ui_projectdata to display non-project data after the removal of menu Utils
• Reorganizes menus Project and Model Building
• Removes unnecessary files from _menuactions and qaequilibrae.py
• Fixes tests
• Updates documentation:
  • Blurred figures for QAequilibraE menus
  • Reorganized the documentation based on the new menu display
  • Removed unused imports from requirements-docs.txt and conf.py
  • Removed unused figures