Corrected comment
#484 Fixed showing all metadata fields. This was broken due to a check for the supported config being present, however due to the way Symfony config works it is always present but may be empty.
Merge pull request #486 from janus-ssp/hotfix/484

#484 Fixed showing all metadata fields
Bugfix: use statement to ConfigProxy
Merge remote-tracking branch 'upstream/develop' into fix-acl-screen