Increase the limit of segments and containers we can add in audience creation

[#1]

Description - While creating a new audience by combining existing audiences, we can only add upto 20 segments and add upto 2 containers one with in another.

Why is this feature important to you - In some cases we want to add more than 20 segments and create complex audiences making use of profile scripts and add 3 or more containers

How would you like the feature to work - Just as the regular segment creation, with updated max limits.