Refactoring Entity work (part 2)

[vchelaru]

When refactoring an entity name:

• A window should appear confirming the rename - this is brought up when changing the name in the property grid.
• The window should show the old name -> new name, where the new name is editable
• The window should have a checkbox to rename all lists, and include which lists will get changed. For example, changing from Player to Character should show PlayerList -> CharacterList
• The window should have a checkbox to rename all instances, and include which instances will get changed. This should be a hard comparison on the old entity name and rename to new entity. In other words, Player1 -> Character1
• The window should have a checkbox to rename collision relationships IF the lists are being changed. This should have a list of which items would change. For example PlayerVsSolidCollision -> CharacterVsSolidCollision

[vchelaru]

Putting lower priority on this. Previously this was completely broken, and the new confirmation window is a big improvement. Going to leave it as-is for now and revisit this if/when refactoring comes up as a concern again.