Shop improvements

[zzucco]

What am I addressing?

Closes #323

How/Why did I address it?

• Items in the shop interface have an up or down arrow indicating price modifiers.
• Town shops will reset after 24 hours have passed.
• The way shop inventories are populated has been rewritten.
  • The amount of an item added is now a range.
  • All towns now have some general items. The large the town, the more items.
  • Small towns can only have abundant and common general items. Medium and large towns can have general items of any rarity.
  • Large towns have a variety of items from various tags: combat, medical, tools, etc.
• A few new items + a large rebalancing of item values
• Rewrote the dialogue for town leaders to add some lore.

NOTE: To test this, I made it so you can travel to any node regardless of distance so you can quickly jump between towns. I will remove this before merging.

Reviewers

@GameDevProject-S20/bestteam

What should reviewers focus on?

• [x] Visit towns. They should have shops populated with a variety of items according to their tags.
• [x] Talk to the town leaders. They should give you information about trade and about the world.
• [x] Buy items from a town, then wait a day and revisit the town. The shop should have had its inventory reset. How long should it take for a town inventory to reset?

[fredghostkyle]

Is there a tutorial on how this system works? We should build that into the start tutorial when they enter York if so.

I do like the changes, they look really good and help aid the player in buying decisions.

[cailynse]

Awesome! I think maybe a little explanation on the first shop visit would be helpful for the arrows - I did not find it completely intuitive