installation: Flask-CeleryExt>=0.2.2
installation: Flask-CeleryExt>=0.2.2

Signed-off-by: Jiri Kuncar <2bdffcb416fed3002465740d19a053a39918cbe5@cern.ch>

inveniosoftware/invenio-files-rest,inveniosoftware/invenio-files-rest