New buttons to increase/decrease gold by 1/10/500/1000 and favor by 5/10/25/100

Full compatibility with Jan 2021 update(s) and Monopolies Great Works (Products)

Reverting re. bug reports

Full compatibility with Jan 2021 Monopolies mode (some Great Works changes)

Compatibility with the game's Dec 2020 Update(s), namely:

• Collapsable inventory
  
• Mark agreements etc. as unacceptable to AI ("Stop asking me for X")
  
• Addressed inability to trade back captive spies
  
• Additional city hover tooltip info
  
  Bug fixes
  
• Addressed Gold and Favor icons displaying with yellow text instead of white
  
• Addressed inability to trade back captive spies
  
  Other
  
• Various minor QoL improvements

German translations, courtesy of swinghead

Improved compatibility on smaller screens/windows (under 1560px)

Addressed Favor icon/button not appearing (Gathering Storm)

Addressed breaking-incompatibility with CQUI; CQUI's deal screen changes are no longer active.
Addressed icons in the center pane coloured yellow when they shouldn't be.

Colour resources yellow if the other player already has access to them.