Re #8583 - Loading screen and error reaction in certificate.html
Re #8583 - Improved certificate listing
Re #8583 Certificate creation - creation success alert using Bootstrap
Re #8475 - Created constants.js for Rest API endpoint definitions
Re #8475 - Certificate item component added
Re #8474 - Fixed index.html table header alignment
Re #8474 - Styling of create_certificate.html using Bootstrap
Re #8474 - Styling of index.html using Bootstrap
Re #8474 - Created index.html with certificate listing