Small Achievements Update

Changed some names, icons and also removed the 1M achievement, because I was told that it was a too big of a grind for getting it. To be honest, I felt the same... ːvanilla2ː

[h3]Changed name and icon[/h3]

• 1.000 -> 1K
  
• 10.000 -> 10K
  
• 100.000 -> 100K
  

[h3]Removed[/h3]

• 1M - was a too big grind for many
  

[h3]L8er & Have Fun Playing ːDː[/h3]