Add ability to see how much of a barrier you have on your creatures

At the moment I often don’t know how much health my barriers have on my creatures - it would be really useful to be able to display this - possibly over the health overlay in some capacity.

Also - its not completely clear to me if a barrier gets removed/replaced/augmented if you apply a new barrier on top of it - would someone be able to clarify this? I would assume it would be likely be replaced with the stronger barrier if applicable - as I would think this is the most balanced.