* when running Jellyfin as a user from a terminal without passing
arguments, it would not find the web-files. They were moved in the
JF-web build for Fedora, so this env-var would point to an invalid
location. By removing it, JF now checks the default location.
* fixesjellyfin/jellyfin-web#2059
Simplifies a number of aspects of the RPM build, including moving
.copr/Makefile into the "fedora/" folder (and leaving a symlink),
removing the jellyfin-web build components, and renaming it
jellyfin-server like Debian did.