remove tomcat requirement

• Connect frontend JS, CSS, IMAGES
• Connect map_images - path should be in app config, should be obtained in debian package update
• remember that css/js files must be versioned (hash in the url)
• remove primefaces
• default error page (404/500)
• build fat jar
• error content type is wrong
• first API call generate weird API
• wire tests properly - currenlty there is an exception
• map old urls (index.xhtml, export.xhtml, admin.xhtml, login.xhtml, default-cookie-policy.xhtml) to the new urls
• old map link from enrico publication
• deb package should install fat jar
• deb package should provide minerva.service
• deb package should forbid dependency on tomcat8/tomcat9/tomcat10
• old API endpoints should be handled properly
• fetch version properly from jar MANIFEST
• align spring config with the new spring boot
• remove ant dependency
• provide app version from MANIFEST inside jar
• logs should go to /var/log/minerva.txt (+logrotate config)
• test install
• test upgrade from tomcat8/tomcat9
• GET http://localhost:8080/minerva/resources/images/icons/ajax-loader.gif 500 (Internal Server Error)
• GET http://localhost:8080/minerva/index.xhtml?id=sample (404)
• folder for images and minerva-big should be taken from config everywhere in the application