Update Notes For v0.51.14

Business monthly foot traffic job hours are ~50% less volatile
Business Garden Nursery reduced consumption rate of soil and containers
Added Charter Pilot and Commercial Pilot jobs
Added Charter Flight player business
Added Solo Flight activity to Airport
Added Airstrip real estate to Airport
Renamed contract "Supply Corporate Offices" to "Supply Corporation"
City Explorer preferences show as related items for jobs and educations
Fixed business job efficiencies not immediately recalculated when staff hired or fired
Fixed business job efficiencies not immediately recalculated when outsource button ticked or unticked
Fixed employee XP generator creating too many incompetent characters for certain jobs