Store dialog formatting changes and progress on quest implementation.

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Stores now fully functional with quests and services.

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Code cleanup + add messages to store interface.

Signed-off-by: nppangband <nppangbanddev@verizon.net>