Building Upgrade Manager

A building upgrade manager for all resource, troop, defensive, and support buildings. I can be it's own separate manager, or may be included into the layout manager. Either way, it will be an option to easily view all the different levels of your buildings and their perspective cost for upgrading them, allowing you to easily upgrade a building. For example you want to upgrade your defensive building but you have a limited amount of gold, so you would use the upgrades after to see which buildings you can upgrade with the amount of gold that you have or even if you have a lvl 6 cannon when the rest are lvl 7.