CSPACE-4680: Fixed spinner position to absolute.
CSPACE-4680: Fixed spinner position to absolute.

cherryhill/collectionspace-ui,cspace-deployment/ui,cspace-deployment/ui,cspace-deployment/ui,cspace-deployment/ui,cherryhill/collectionspace-ui,cherryhill/collectionspace-ui,cherryhill/collectionspace-ui,cspace-deployment/ui