fix: only 'save' action in 'configuration' and 'service-catalog' pages

I.e. actions 'Cancel' and 'Delete' are not shown anymore.
Merge branch 'feature/ui-revamp' of github.com:slipstream/SlipStreamUI into feature/ui-revamp
fix: service catalog display

Previously service catalog sections were displayed twice, because the
server provides them duplicated in the metadata. Still unclear if it is
a server bug or not.