New option: alienContainmentHasUpperLimit.
Default value: FALSE (OFF)
If it's true, then the upper limit of the Alien Containments is counted!
If it's false, then there is no upper limit. (only when at least one containment is exist)
New: Show Alien Containment capacity on Base-Info screen if alienContainmentHasUpperLimit is on.
Merge pull request #327 from fenyo1/alienContainmentHasUpperLimit

New option: alienContainmentHasUpperLimit