Fix/MUIDataTable style and onClick() listener

Attention

1

Don't merge before Monday 6/12 because we need to discuss about path.

See the modification in the App.js file to know what the modification is.

2

Merge !25 (merged) before and resolve conflicts on this merge after !!

Work done

• Improving MUI data table styling throughout the application
• cleanup onClick listener on most important pages
• add delete action on several pages