QoL Changes

Hello fellow raiders!

After gathering some feedback i present you some QoL changes:

• Set default language to english, if the OS (Operating System) language is not supported by the game
• Refresh skillnodes while the skilltree is open, to reflect if a node is affordable
• Special skillnodes (those with blue border) will now have green or red borders, when affordable or not
• [Hold to buy max. rank] progressbar is now faster
• [Hold to buy max. rank] will only work, if the skill is not maxed out yet

Thanks for playing and giving feedback!