Add Dust to Mini04 EU and Mini06 US

This was added to 4 rots (2 on US and 2 on EU) just as this repo was open. SuperPRISM, Tebulas and other RageTDM's are in the rots 6 times (3 on US, 3 on EU) so it would be nice to balance it out. 

Dust has quite a high rating of 4.35/5 and seems to be liked by quite a lot of people. I made sure the team sizes flow nicely with other maps in the rots.