Added initial selling logic - need to refactor buy logic to allow market instead of just created
Display total price for purchasing
Added explicit buy/sell columns

Added list of items provided by research topic
Improved market component to provide price fluctuations for buy/sell based on buy/sell events
Implemented market price normalisation - still need to add 'events' that could trigger fluctuations
Implemented version checks
Added about and updates pages
Added ability to 'fire' employees or destroy buildings
Further tweaks to market balance. Added some transport modes
Minor rate tweaks, price updates.