Added 10 new tasks to Dimitri

Added xp given from options

Improved Pripyat Outskirts skin

Cortex should keep working when leaving tab

Added trader unlock notification. 

Nerfed Radiation damage at higher thresholds

Added Cortex Radiation option

Added raid history tab

Cleaned up Trader UI

Upgraded leaderboard/username tech

Containment breach message fixed

Added more flavor texts yum

Added junk loot events

Fixed minefield event

Fixed CORTEX artifact harvest