Update 2.1.4 - Minor fixes

[p]Version 2.1.4 fixes a couple of gameplay bugs and updates the version of Unity engine to address the recent security issue with older versions.[/p][p][/p][p]Fixes included:[/p]

• [p]When using a game controller, you can once again select target cards in the Showdown when prompted to do so as the result of defeating another card.[/p]
• [p]You can no longer select target cards on the table that are highlighted to indicate they affect the current selected action but are not valid targets for that action.[/p]
• [p]Decreased the font size on the book synopsis UI to avoid scrolling a single line of text.[/p]
• [p]The selection indicator now shows up properly in all cases when prompted to select a target card.[/p]