Short description to update the current lib

1. Go to https://datatables.net/download/
2. Now select the following options for download:
   Styling framework:
   - Bootstrap 4
   Packages:
   - Datatables
   Extensions:
   - FixedHeader
   - Responsive
   Download:
   - Minify
   - Concatenate
2. Download and unzip the file
3. Copy the 2 css and 2 js files from the main folder to the lib folder
4. Get the datatables luxon plugin from https://github.com/DataTables/Plugins/blob/master/sorting/datetime-luxon.js
