[Update] QoL and fixes

Feature/QoL > New Feedback system to display what are the latest changes unlocked by the player. Including, new powers, spells, crafting compounds available, new equipments, charms, available attribute points... The feedback have 2 natures: an eye to highlight a change, or an exclamation to indicate a possible action.

Balancing > All recipes difficulty have been lowered. > The first items given in the scenario (stones and equipments) cannot be sold on the Market.

Fixes > All inputs text will validate only on enter or leaving field. > The Market was not properly allowing the items to be bought only once.

Graphical > All Buttons have a mouse-over border highlighting and a revamped look.