perms: fixed fork permission help text to reflect the actual state on how it works.

permissions: use constant for fork enable/disable

permissions: flush permissions on owner changes for repo and repo groups.

artifacts: added admin panel to manage all artifacts in an instance.

core: added patches to support latest problems with setuptools scm.

git: fix for unicode branches

miantainance: fixed bad routes def

compare-view: fix referenced commits bug

git: fix lookups. - prioritize referenace names over numerical ids - numerical ids are supported as a fallback if ref matching is unsuccessful.

core: optimize some calls to skip license/scm detection on them