Rule clarification: Cannot move department stores

[garykac]

Make it explicit in the rules that department stores cannot be moved using the Move action.

It's a reasonable interpretation of the current rules that being able to move a "store" includes "department stores", so it should be made clear that the action does not apply to department stores.

See https://boardgamegeek.com/thread/2672599/moving-department-store

[garykac]

Updated rules to use Specialty Store and Department Store to remove this source of confusion.