log the URL that got us new tasks

Do not hold the downloaded files in memory

Don't setgid(apache) while importing ("uploading")
More obvious "locking" importer proctitle

do not remove the PR directories too early

upload sources only if there are some
update copr-fe-dev hostname

dist-git: python code for removing unused tarballs on dist-git server

add a --foreground option for importer_runner.py
install debugging helpers for indefinite imports (rhbz#1963954)

dist-git: optimize cgit cache file generator
dist-git: move everything to Python path
backend, frontend, keygen, distgit: keep cca 3 months of logs

sleep and continue when frontend is not available

distgit: extend the timeout limit for importing packages
distgit: allow `import_package` function to run in parallel
distgit: require up2date python3-rpkg
distgit: use kojiprofile instead of deprecated kojiconfig
all: run pytest with -vv in package build
distgit: each log entry to contain PID
all: add Makefile symlink to sub-dirs