Fixed the action names for "DeletePackageApi" and "PublishPackageApi"

which are endpoints to unlist and list a package in V2Gallery

This was broken by a 'Find-Replace' commit
e9313fed53aa1569a3841d650f0d67dd8ca55472 made on 04-08-2014

I would like to spend some time fixing any other possible misses from the
old commit. But, given the high importance of this fix, sending this
separately