So I just started using a Nokia 930 and I've been presented with the following dialog when checking for updates to the pre-installed applications;
You'll notice an absence of exactly what "Consent needed" means.
When you touch "retry all" Lumia Storyteller now presents the following dialog;
So "Consent needed" in this case is to grant Lumia Storyteller access to location data. Of course tapping "Cancel" works and prevents the app from installing - it doesn't remove it from the list though so you'll be prompted for as long as you own the device to install it. You just need to "allow" once (which anyone can do, no password required) so better make sure you never give the device to anyone else. Once you've allowed the app there doesn't seem to be a way (other than uninstalling the application) to revoke the granted permission.
I'm sure all that will follow in Windows 10.