version numbers in the manifest files clarified

Public release as v1.19(1.54)
* updated fuel prices and dependent maintenance, insurance and garage costs

Public release as v2.10(1.55)
* standard foodtank and livestock trailer chassis added

Public release as v2.10(1.55)
* updated fuel prices and calulated the dependent maintenance, insurance and garage costs
* removed the level limitations of trucks, trailers, components and accessories
* extended the validity of freight orders from 30 to 48 hours
* reduced the probability of suitable jobs for employed drivers from 70 to 50%
* reduced the resale value of trucks, trailers, components and accessories from 60 to 40% of the new value
* expanded and diversified the used vehicle market significantly
* increased the quit time for employed drivers from 3 to 7 days
* reduced the probability for weight check from 60% to 25%
* updated bank loan interest rates

Public release as v2.9(1.55)
* updated fuel prices and calulated the dependent maintenance, insurance and garage costs
* updated bank loan interest rates

Public release as v2.8(1.55)
* updated fuel prices and calulated the dependent maintenance, insurance and garage costs

Public release as v2.7(1.55)
* updated fuel prices and calulated the dependent maintenance, insurance and garage costs
* updated bank loan interest rates
* modified assistance service and emergency refuel parameters

Public release as v2.6(1.55)
* updated fuel prices and calulated the dependent maintenance, insurance and garage costs
* updated bank loan interest rates

Public release as v2.5(1.55)
* calculation errors in loan interest rates corrected

Public release as v2.4(1.55)
* updated fuel prices and dependent maintenance, insurance and garage costs
* reworked the bank loans and added three additional loans
* reworked the wear and tear of trucks and trailers
* fine-tuning of special cargo rewards (base game)