Upgrade System in Release

New card upgrade system: Rune inscription 

Note: For now only some cards have 1-2 runes. Planned are around 14 different runes for each card and its rune tree

Disenchanting a card now gives a new currency: magic ink. It is used for rune inscription. 

Player advancement is now displayed in the interface. 

Note: Player advancement is the number of levels you are into the current run 

The look of cards has changed slightly to make room for rune upgrade icons. This will further be adapted in the future to avoid clipping and more fancy design.