WL-3020 Disable compress action for the root folder

At the moment performing this action doesn't do anything, so it is being
removed from the list of available actions. Of course we should really be
looking at _why_ the compression doesn't work, but this is a first step.
WL-3020 Replace actions iteration to use an index

This is because calling remove with the object will cause it to go through
the list all over again.
Merge pull request #11 from ox-it/WL-3020

WL-3020 Disable compress action for the root folder