After performing an action that changes state, namely starting and
stopping a tier, run through the action pre-filter again, to make sure
that the allowable actions are properly refreshed.
Conflicts:
ui/scripts/ui-custom/vpc.js
** Note: this is a work-in-progress, and only contains dummy content
Implement UI for managing VPC tiers, via a custom chart-like UI list
tiers and allowing the management of VMs associated with the VPCs.